[Epidemiology of maternal high risk].
D000293:Adolescent; D000328:Adult; D003422:Critical Care; D005260:Female; D006801:Humans; D008800:Mexico; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology* / Q000401:mortality; D011446:Prospective Studies
Epidemiología del alto riesgo materno.