Reduced ratio of male to female births in Japan.
H
H
Ohmi
K
K
Hirooka
Y
Y
Mochizuki
D001723:Birth Rate / Q000208:ethnology*; D003469:Culture; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007564:Japan / Q000453:epidemiology; D008297:Male; D012744:Sex Ratio