Sex ratio of infant mortality.
D001315:Australia; D002489:Central America; D005060:Europe; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D007226:Infant Mortality / Q000266:history; D007231:Infant, Newborn; D008297:Male; D009519:New York City; D012737:Sex Factors; D014481:United States