In-vitro fertilisation and sex ratio.
Thatcher
S S
SS
Restrepo
U
U
Lavy
G
G
DeCherney
A H
AH
D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D012744:Sex Ratio