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is a significant concern for physicians. Central
5 T8 L, H5 T. ~precocious puberty (CPP), which is mediated" v8 ~8 y8 {1 g+ R# z. W3 a, l, M
through the hypothalamic pituitary gonadal axis, has8 D$ h0 S; G, p% q$ b. r4 J
a higher incidence of organic central nervous system+ b( G# n! N; J/ \5 a+ {
lesions in boys.1,2 Virilization in boys, as manifested
7 ]" f* t5 g; t- W! u- _by enlargement of the penis, development of pubic/ p- T/ T/ g( v' M
hair, and facial acne without enlargement of testi-
$ |* E) ]( D* Q3 O5 a Z4 tcles, suggests peripheral or pseudopuberty.1-3 We
0 z6 G _) Q' O! i( p3 f" Kreport a 16-month-old boy who presented with the$ u: B9 I( ?2 G! Q6 i( j+ W
enlargement of the phallus and pubic hair develop-5 N" h+ W6 o: _' x7 B
ment without testicular enlargement, which was due
9 ]6 ?6 k* H# L; y; q% \$ R, Q, uto the unintentional exposure to androgen gel used by
4 v- i9 t s# Vthe father. The family initially concealed this infor-
* L9 u4 T) r9 C$ Hmation, resulting in an extensive work-up for this& j$ h7 d. f7 h4 V3 {* k
child. Given the widespread and easy availability of
. M& S$ h# B% l* u; U. I: }testosterone gel and cream, we believe this is proba-
( e' K# u |. k5 f- ]bly more common than the rare case report in the
, u' P. K5 ?7 l: I$ Sliterature.4
0 K' U0 z9 o' G3 ePatient Report0 X2 g# q% m, D/ l
A 16-month-old white child was referred to the2 w, u0 j% ]$ u) s" e D) Z5 s
endocrine clinic by his pediatrician with the concern, |6 R" P, i3 T% i3 ?
of early sexual development. His mother noticed) }: E' l) t' n3 F0 A0 Z# X
light colored pubic hair development when he was. k: X+ a# }2 u# ~0 Z- \
From the 1Division of Pediatric Endocrinology, 2University of" c8 C7 j) g4 k4 W0 }: U
South Alabama Medical Center, Mobile, Alabama.
% R, @4 T7 w A8 |9 D2 n+ eAddress correspondence to: Samar K. Bhowmick, MD, FACE,1 G) ?% D- r) W! G' u5 u# m
Professor of Pediatrics, University of South Alabama, College of
9 K: a# d4 u' J+ g: VMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;$ c, |9 a, X6 b* z) A' ]$ S' {
e-mail: [email protected].' `3 G0 \* Z: B! Z+ R
about 6 to 7 months old, which progressively became; @6 c: O" s: F( [9 D$ z- } m: \
darker. She was also concerned about the enlarge-
. ^: V0 v8 t5 g+ M' nment of his penis and frequent erections. The child/ {0 T0 d- A! A+ I5 w$ y! d! Q: ]; A
was the product of a full-term normal delivery, with' l) R7 A X7 v( o' ^) Q I4 t
a birth weight of 7 lb 14 oz, and birth length of
( s0 a/ k Z9 C8 V2 G# G20 inches. He was breast-fed throughout the first year, `+ }5 H4 a- {0 e
of life and was still receiving breast milk along with$ ], r# i6 s5 t) H# P6 f, M
solid food. He had no hospitalizations or surgery,
+ `3 e) Z$ E9 Q' C( b" E: V, u. Kand his psychosocial and psychomotor development
& J0 O$ Z& \/ _was age appropriate.
* X$ p/ _; e' }+ a( I. L2 T7 lThe family history was remarkable for the father,
( k# M- M: P( F( Mwho was diagnosed with hypothyroidism at age 16,
$ _8 {5 u% d9 W; z4 wwhich was treated with thyroxine. The father’s
- [4 s$ r7 x" r3 l6 uheight was 6 feet, and he went through a somewhat+ z% [1 n9 i) N7 p0 O
early puberty and had stopped growing by age 14.7 L% U3 n& C% U& [3 F2 L- t$ K
The father denied taking any other medication. The! }% e) X" T4 W' ?1 b" S& {
child’s mother was in good health. Her menarche7 {3 |. A' o( z( m5 X$ M- R: X
was at 11 years of age, and her height was at 5 feet
" b2 \2 O* P8 ]! p. l5 X+ X+ I2 V5 inches. There was no other family history of pre-
. s T* o) }& _. Ncocious sexual development in the first-degree rela-& x# r4 w1 D$ c
tives. There were no siblings.
+ h4 g! ]& ^5 I4 a) ?- S- A8 W- uPhysical Examination. c5 H; c/ J& ?" n
The physical examination revealed a very active,# V4 k$ C7 U* o$ [- I! z
playful, and healthy boy. The vital signs documented _1 N* M# W5 u
a blood pressure of 85/50 mm Hg, his length was8 O! ]0 L9 |; I; O) w# R: f
90 cm (>97th percentile), and his weight was 14.4 kg5 s! v# k% k( C# f( L
(also >97th percentile). The observed yearly growth+ V% a6 @ A, k9 e
velocity was 30 cm (12 inches). The examination of
7 H$ J) ^; B2 E( }: J3 h+ a J6 Z( ^$ Ethe neck revealed no thyroid enlargement.
) V- u6 A! C p0 W) d' v" y1 \The genitourinary examination was remarkable for) T$ B: t9 D1 U
enlargement of the penis, with a stretched length of
: V$ k3 Q6 ]$ n9 c8 cm and a width of 2 cm. The glans penis was very well# D+ e. z, z7 I4 F! X/ W0 m
developed. The pubic hair was Tanner II, mostly around
8 W7 y' j, J/ t540
( s# Y. `/ T8 }6 G8 \8 o* |at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
" ]; O* }4 I, a' Q `the base of the phallus and was dark and curled. The
, T) W8 T# z6 @7 t* t7 Etesticular volume was prepubertal at 2 mL each.
1 {1 p' E1 z1 Q- F; bThe skin was moist and smooth and somewhat
# s" H+ E7 W( ^* t4 \9 s! ]+ hoily. No axillary hair was noted. There were no
: V/ B }$ A; n- K& H' M' `abnormal skin pigmentations or café-au-lait spots.% C. ]" \' b1 Q
Neurologic evaluation showed deep tendon reflex 2+; Z( a) G0 ]. E4 F
bilateral and symmetrical. There was no suggestion
2 B |4 C/ e3 o! ~1 y* w# g6 G Lof papilledema.
# F |0 {# a2 P( ?$ b) bLaboratory Evaluation
* V0 M) m2 a4 y0 C8 E0 OThe bone age was consistent with 28 months by7 l- Y+ n3 ]7 ?! h g& ^6 q
using the standard of Greulich and Pyle at a chrono-; f) K4 ^! q, M. ~0 f/ c: X
logic age of 16 months (advanced).5 Chromosomal
6 J/ w$ s4 |, `0 C1 a6 x* Gkaryotype was 46XY. The thyroid function test8 D# S0 ~( Q/ {. d
showed a free T4 of 1.69 ng/dL, and thyroid stimu-/ P- p& X+ p/ s# b1 J8 f- p1 j
lating hormone level was 1.3 µIU/mL (both normal).: s/ `, y! z" y. s+ k) C
The concentrations of serum electrolytes, blood
+ T! s4 j* J% v) i e0 b: wurea nitrogen, creatinine, and calcium all were
2 E4 `+ c; }3 p; H; M0 twithin normal range for his age. The concentration4 |3 p" p# R* n- B8 g" `
of serum 17-hydroxyprogesterone was 16 ng/dL3 [8 A9 K7 E8 d7 m) {0 }0 L
(normal, 3 to 90 ng/dL), androstenedione was 20! n3 M% L+ e; k7 S
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-3 T0 w! A# F" e' `
terone was 38 ng/dL (normal, 50 to 760 ng/dL),- t$ ~5 |/ z* l! H1 j5 }$ ?+ r
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
: @* @1 B& ]2 t: K/ A. ` E, Y49ng/dL), 11-desoxycortisol (specific compound S) ^/ m# V& k) J: o& @7 e* Q X
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-! ]# E1 x! j1 K6 H0 p6 S+ p4 i
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
: H% z# F. h) u# p7 n1 z @( F. wtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),/ ?# j6 @, q. N* m: h, z$ s
and β-human chorionic gonadotropin was less than
7 x7 K' x0 T& e+ A0 G5 mIU/mL (normal <5 mIU/mL). Serum follicular
5 E6 T6 m$ j4 }( a' T) t- g9 i0 zstimulating hormone and leuteinizing hormone
5 `- |, C- ^6 z+ hconcentrations were less than 0.05 mIU/mL
4 g1 w9 {6 l' l4 W(prepubertal).
[0 `* P* r+ l: E, fThe parents were notified about the laboratory7 o5 ?& E9 G$ K& W2 H( I
results and were informed that all of the tests were
1 A4 K4 N) C! u- ?normal except the testosterone level was high. The
8 R" L; i! R! y: O# a& ~follow-up visit was arranged within a few weeks to6 k* C$ X: ^; n8 ~
obtain testicular and abdominal sonograms; how-
E( X; g1 E9 @5 \ever, the family did not return for 4 months.7 B- B# @( z* d8 X. V5 u7 u
Physical examination at this time revealed that the
! w; Y: |6 V8 V7 j- H# p+ q6 R7 tchild had grown 2.5 cm in 4 months and had gained) w6 M! i* T4 Q+ F: L I% V [
2 kg of weight. Physical examination remained! D0 d. x6 c" q9 a! Z/ J
unchanged. Surprisingly, the pubic hair almost com-' V2 D, V% F) c3 `" D2 ^
pletely disappeared except for a few vellous hairs at
* z, O6 |$ J$ rthe base of the phallus. Testicular volume was still 2
( t3 ^. e- s# V( wmL, and the size of the penis remained unchanged.' p4 T& B" g1 l4 K8 s; N& ~
The mother also said that the boy was no longer hav-
" `- {) h7 b* o' y& Sing frequent erections.
/ P7 H% f2 }- v* y% f) nBoth parents were again questioned about use of# @8 I3 e7 A g5 {* N( F
any ointment/creams that they may have applied to2 v! q! \' P: V0 D! Q3 m: z4 _
the child’s skin. This time the father admitted the
2 e% n) U" r, h1 |: iTopical Testosterone Exposure / Bhowmick et al 541$ B( E$ U5 J7 b$ |' t
use of testosterone gel twice daily that he was apply-
0 p$ S. @% n* ]# o5 I" ~' iing over his own shoulders, chest, and back area for/ s* Y$ d. y: I* b# X3 k4 D& x. l
a year. The father also revealed he was embarrassed9 M5 T! K4 s; i/ r$ o* J5 d
to disclose that he was using a testosterone gel pre-9 E [, p% p# j" b. H" `, K
scribed by his family physician for decreased libido; |- x0 V5 L5 b3 w
secondary to depression.
! f: [/ H5 G; q) ^# Z" |; bThe child slept in the same bed with parents.4 D, I# Z& m" C7 f: L/ r" y9 O# M
The father would hug the baby and hold him on his
& ^8 b: X& D" m% M, jchest for a considerable period of time, causing sig-- y; k, {7 M% b! D
nificant bare skin contact between baby and father.
( c: X% o6 E0 |The father also admitted that after the phone call,: ~" i5 P+ e( {9 s+ T4 H
when he learned the testosterone level in the baby
1 @6 E) h- v! \+ ]/ mwas high, he then read the product information/ E, o) k8 t* @
packet and concluded that it was most likely the rea-6 X' s( d* R5 _1 I' E B7 j% ^' ?
son for the child’s virilization. At that time, they7 U2 R* T$ n7 F( _
decided to put the baby in a separate bed, and the
) G7 w- F$ Y3 @1 i- ^* Kfather was not hugging him with bare skin and had
, x7 R$ w/ O4 A4 fbeen using protective clothing. A repeat testosterone
3 _0 m: `- a' z$ Q8 Vtest was ordered, but the family did not go to the5 l- M- j8 \8 [. s4 o# ?+ e
laboratory to obtain the test.4 I% D3 w( D$ @& a
Discussion
( q. t* S- R' `' V; l( SPrecocious puberty in boys is defined as secondary6 \2 f$ i% g; k: b0 F7 U
sexual development before 9 years of age.1,47 U Y# t. B0 v C2 M$ \
Precocious puberty is termed as central (true) when
8 [% Y) g4 U6 j$ \2 s0 B1 `it is caused by the premature activation of hypo-
4 {" [) b3 t7 O+ _thalamic pituitary gonadal axis. CPP is more com-
x7 v' C$ }6 \5 D( hmon in girls than in boys.1,3 Most boys with CPP
0 Q; {! h0 q/ K5 vmay have a central nervous system lesion that is3 y/ A( \+ Z, ]; E, b6 Z7 N
responsible for the early activation of the hypothal-
3 q( \5 f! Z* I& damic pituitary gonadal axis.1-3 Thus, greater empha-) L: G; X0 z$ C: E# y4 b
sis has been given to neuroradiologic imaging in
) b& B, y; \8 u) A u! w$ ~boys with precocious puberty. In addition to viril-2 a" l" i8 b# x* w* b
ization, the clinical hallmark of CPP is the symmet-
% L3 Q! i5 h8 s p. Grical testicular growth secondary to stimulation by# f( S3 g3 v9 G3 l+ Q$ _
gonadotropins.1,3( y& q P' t! q( y
Gonadotropin-independent peripheral preco-- t% F$ G0 X0 J( _2 F, l; L% s
cious puberty in boys also results from inappropriate( |5 q& B# }; S- M- y1 L5 y
androgenic stimulation from either endogenous or
; q. X8 R6 \4 ?/ O0 ^exogenous sources, nonpituitary gonadotropin stim-
* r/ Q( `$ F: s1 Pulation, and rare activating mutations.3 Virilizing) A5 Q( W. U5 y3 X7 s& h6 P
congenital adrenal hyperplasia producing excessive3 F: c* x8 ^1 L6 o" ~8 G4 l
adrenal androgens is a common cause of precocious' |; S. s6 \' b. |( X! L3 y
puberty in boys.3,4
+ h+ W6 [. g, T) ^. q! iThe most common form of congenital adrenal) \' R: S/ M- f4 l' M
hyperplasia is the 21-hydroxylase enzyme deficiency.
2 V8 V5 D, S% \2 x. mThe 11-β hydroxylase deficiency may also result in! [# b! Q; a' i( Z X: c( V/ h' o# I1 M( @
excessive adrenal androgen production, and rarely,- ]( }/ n( k& b0 v6 y0 I- R
an adrenal tumor may also cause adrenal androgen
, r3 L+ F$ l' m- `2 ]5 |excess.1,3# g0 r$ L& i& J( w4 d
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
9 w. B: Z7 ~. e- n. r542 Clinical Pediatrics / Vol. 46, No. 6, July 2007- \- O% I' L* I0 i& P
A unique entity of male-limited gonadotropin-* z0 F1 ]8 G8 }. b+ `6 ?
independent precocious puberty, which is also known! m+ D8 L* w' ^5 X
as testotoxicosis, may cause precocious puberty at a/ h/ H6 p8 R" }% i H
very young age. The physical findings in these boys( y3 J0 q2 u- F! [
with this disorder are full pubertal development,7 X0 m9 F1 V9 H, X. l) S
including bilateral testicular growth, similar to boys" \8 v- M: h3 K9 z
with CPP. The gonadotropin levels in this disorder
; H7 s8 g( F7 O' V/ Hare suppressed to prepubertal levels and do not show
. M5 T- `2 f" q1 Q( [+ Lpubertal response of gonadotropin after gonadotropin-8 i5 F6 E* J, o8 r2 k9 X
releasing hormone stimulation. This is a sex-linked
% E* Z6 @6 X+ p1 w3 E# t* wautosomal dominant disorder that affects only
! o9 N; v9 i6 p$ n' ~6 h2 nmales; therefore, other male members of the family5 Y4 _" A1 j* s3 i; m
may have similar precocious puberty.3
' g, X! r5 v! M4 Z( J1 NIn our patient, physical examination was incon-" ]" T( X: R5 A4 E! ~% w. c1 B
sistent with true precocious puberty since his testi-
& M2 D1 @" v5 w, pcles were prepubertal in size. However, testotoxicosis p/ u/ n4 E5 w, |+ v: s0 Q T
was in the differential diagnosis because his father% H* d+ K C' x/ q5 J8 U
started puberty somewhat early, and occasionally,+ L( w. n u- ]$ H2 y' S
testicular enlargement is not that evident in the
1 i) I3 I7 G8 ]# x) Wbeginning of this process.1 In the absence of a neg-% _+ l7 n/ p) C3 V2 D+ C
ative initial history of androgen exposure, our2 Z4 `! I0 o9 L
biggest concern was virilizing adrenal hyperplasia,) m: R* H+ |7 R- o
either 21-hydroxylase deficiency or 11-β hydroxylase
' q$ U' J/ ]3 s( tdeficiency. Those diagnoses were excluded by find-0 e) f q, A, o8 l& R5 G
ing the normal level of adrenal steroids.
# o |. p/ \' I; V( f, RThe diagnosis of exogenous androgens was strongly
" ?9 E, v" \3 C8 esuspected in a follow-up visit after 4 months because
! z7 J. X2 C& Mthe physical examination revealed the complete disap-
# W Q9 s7 ? }) n9 T4 j: Bpearance of pubic hair, normal growth velocity, and
. x' M( t/ h: R& f8 s, j9 Ddecreased erections. The father admitted using a testos-
. w& x/ _+ k- B9 j9 [: jterone gel, which he concealed at first visit. He was5 _. ?9 @& i0 O3 E7 B0 q
using it rather frequently, twice a day. The Physicians’ v$ I- M) p& I5 m8 P# C6 ^
Desk Reference, or package insert of this product, gel or6 h, s! M# c- @# H$ J+ R2 E
cream, cautions about dermal testosterone transfer to
8 l r3 z6 f0 t1 m' x0 c: I* Wunprotected females through direct skin exposure.
2 h6 ^: l k$ ]+ H7 aSerum testosterone level was found to be 2 times the
3 e0 k: ~: Q6 k- rbaseline value in those females who were exposed to' h2 a K* o; f$ `1 k
even 15 minutes of direct skin contact with their male
" i/ ^8 l8 ~. f/ f+ H' H$ H. npartners.6 However, when a shirt covered the applica-* L/ X! n- @3 }" n% j& M: I
tion site, this testosterone transfer was prevented.7 u6 }( Z4 W5 T9 ^2 `
Our patient’s testosterone level was 60 ng/mL,
4 l4 M7 H1 P W" x$ A4 S4 Z1 cwhich was clearly high. Some studies suggest that
+ [1 @% M! S( z* Vdermal conversion of testosterone to dihydrotestos-, W; b% d$ G8 X$ L* L! t
terone, which is a more potent metabolite, is more
1 P6 G6 ]- E r- R$ l# b) }active in young children exposed to testosterone
( A9 |& t4 R; mexogenously7; however, we did not measure a dihy-# d4 z5 \1 q% ]& w. ^2 K8 M
drotestosterone level in our patient. In addition to, C8 B' y' H; n/ ~5 X# s
virilization, exposure to exogenous testosterone in/ n$ _9 h- k$ _
children results in an increase in growth velocity and& @, |2 P h- I Z& ]/ ^0 i M
advanced bone age, as seen in our patient." r- Q( D9 v5 n' h9 t# c8 T) i* ^
The long-term effect of androgen exposure during* N! E/ U" z$ y/ T* n$ o1 b
early childhood on pubertal development and final ~, k# D/ ]" X s, n7 o
adult height are not fully known and always remain
: d( l. o8 T5 i5 y% Qa concern. Children treated with short-term testos-
$ \: g8 F' q0 P N3 M9 s- Wterone injection or topical androgen may exhibit some
7 Y( j" a" L! G( F: G) x/ zacceleration of the skeletal maturation; however, after
+ y/ ]% }* Q+ {cessation of treatment, the rate of bone maturation x* G7 p6 f% i0 Y8 ~( Z" F& j
decelerates and gradually returns to normal.8,9
. E* w0 P- i5 \5 }4 J! N% M: EThere are conflicting reports and controversy
. p% w/ }0 S" ?5 e- [+ Fover the effect of early androgen exposure on adult) E9 v x. Z+ g# G5 z& m, y
penile length.10,11 Some reports suggest subnormal
* A( |( h' c7 ^5 f8 M7 Madult penile length, apparently because of downreg-
4 G! C* K) S) {) ^ulation of androgen receptor number.10,12 However,. {6 d' f5 l: B# q6 ^ L
Sutherland et al13 did not find a correlation between
# Y9 g! w3 M% Q4 O: I$ A& mchildhood testosterone exposure and reduced adult% V3 F6 V3 v2 W& g H4 R
penile length in clinical studies.7 y+ o+ y3 Z$ p# b3 L
Nonetheless, we do not believe our patient is ]; w" p5 }3 r4 ]
going to experience any of the untoward effects from
8 K7 Z7 P2 E& V; B% otestosterone exposure as mentioned earlier because: B$ K0 l, V2 M5 [$ }4 ]
the exposure was not for a prolonged period of time.
" P \% }" d5 EAlthough the bone age was advanced at the time of
! f( `0 Q6 u, W- g4 bdiagnosis, the child had a normal growth velocity at1 P. z U7 L* }0 X5 u
the follow-up visit. It is hoped that his final adult
& S+ j8 x' m" P; w; Z- Q7 }height will not be affected.7 a5 Y/ H# w$ p& ?; ? }
Although rarely reported, the widespread avail-) l: s3 x" j8 E, U1 q2 O
ability of androgen products in our society may) p( p% Y9 }* S( w% s$ D; s$ ?1 {
indeed cause more virilization in male or female
5 M3 M1 d- V6 W4 w# M9 ^- Zchildren than one would realize. Exposure to andro-
( {+ R( S! W* v) ygen products must be considered and specific ques-
/ g7 i. {. f% M+ b: V: Htioning about the use of a testosterone product or9 {) o" w# ]( f
gel should be asked of the family members during3 q) f; R* A2 o$ f6 J4 ?+ g
the evaluation of any children who present with vir-& Z' c3 f& T# D9 e8 N
ilization or peripheral precocious puberty. The diag-' p( E1 g$ q; ~9 ?5 F
nosis can be established by just a few tests and by
5 n: H5 L' \! ^appropriate history. The inability to obtain such a
. E% D2 r7 E1 d) Ohistory, or failure to ask the specific questions, may
1 l4 b4 n. _ M' lresult in extensive, unnecessary, and expensive% ^# t5 s9 m4 ~: \
investigation. The primary care physician should be
4 b, Y2 Z, l+ Z: v& X0 u! daware of this fact, because most of these children
+ P7 H; y8 P/ H2 Dmay initially present in their practice. The Physicians’8 V% M8 b+ {) M6 `& w1 y3 x
Desk Reference and package insert should also put a
' ? U. N* _; x6 l1 Gwarning about the virilizing effect on a male or* f( t+ T5 l+ T. K
female child who might come in contact with some-
. k9 ^) j& Q5 F ?+ g0 p6 U. Qone using any of these products.
1 t/ U5 Q8 d5 k JReferences
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and puberty in the male. In: Sperling MA, ed. Pediatric
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2002: 565-628.
0 O9 |! F8 ?/ ?4 S, b# G2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
+ S8 j1 S% u' d# C- E/ }3 j9 Opuberty in children with tumours of the suprasellar pineal2 e( `" [% A. A9 r4 F0 |
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# }3 D3 i9 n; Q5 qareas: organic central precocious puberty. Acta Paediatr.
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z' D! L6 o% _0 VDekker Inc; 2003:211-238.
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exposure to testosterone. Pediatrics. 1999;104:e23.; @2 g& X5 r' U. [+ M6 c4 ~3 Z9 ^
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Stanford, CA: Stanford University Press; 1959.+ I5 _4 j' t7 P" x1 T% ^) W% {2 Q
6. Physicians’ Desk Reference. Androgel 1% testosterone," O1 k( q0 a; y* j2 r4 p4 u; u! p. N
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
7 g/ ~& e; h9 X+ |0 L8 iEconomics Company, Inc; 2004:3239-3241.
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