Seasonal patterns of conception in New York City.
D001741:Black or African American; D001719:Birth Certificates; D001723:Birth Rate; D003644:Death Certificates; D005006:Ethnicity; D005260:Female; D005306:Fertilization; D005313:Fetal Death / Q000453:epidemiology; D006801:Humans; D007086:Illegitimacy; D007182:Income; D007231:Infant, Newborn; D008297:Male; D008393:Marriage; D008423:Maternal Age; D008598:Menstruation; D009519:New York City; D010298:Parity; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011647:Puerto Rico; D012621:Seasons; D012744:Sex Ratio; D013997:Time Factors; D014481:United States