Further observations on prematurity and perinatal mortality in a general population and in the population of a prepaid group practice medical care plan.
D005260:Female; D006125:Group Practice, Prepaid; D006262:Health; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D007348:Insurance, Health; D066087:Perinatal Death; D054238:Perinatal Mortality; D011247:Pregnancy
INFANT MORTALITY; INFANT, PREMATURE; INSURANCE, HEALTH