Obstetrical care and social patterns in metropolitan Boston.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D001724:Birth Weight; D002648:Child; D005260:Female; D006801:Humans; D007086:Illegitimacy; D008297:Male; D008404:Massachusetts; D008875:Middle Aged; D009774:Obstetrics; D011247:Pregnancy; D011647:Puerto Rico; D012924:Social Conditions; D013223:Statistics as Topic; D014481:United States; D044465:White People