Intensive surveillance of pregnancy-related deaths, Puerto Rico, 1978-1979.
D000293:Adolescent; D000328:Adult; D002648:Child; D003644:Death Certificates; D005260:Female; D006801:Humans; D008428:Maternal Mortality; D008875:Middle Aged; D011159:Population Surveillance; D011247:Pregnancy; D011248:Pregnancy Complications / Q000401:mortality; D011644:Puerperal Disorders / Q000401:mortality; D011647:Puerto Rico; D013997:Time Factors