Serum levels of testosterone do not provide evidence of selection bias in studies of male reproductive health.
Andersen
A G
AG
Jørgensen
N
N
Andersson
A M
AM
Carlsen
E
E
Skakkebaek
N E
NE
Jensen
T K
TK
Keiding
N
N
Swan
S H
SH
D000328:Adult; D003718:Denmark; D005298:Fertility; D006801:Humans; D008297:Male; D015983:Selection Bias; D013739:Testosterone / Q000097:blood*
D013739:Testosterone