[Epidemiologic study of premature labor. Analysis of 19,385 cases].
D005260:Female; D006801:Humans; D008800:Mexico; D007752:Obstetric Labor, Premature / Q000453:epidemiology* / Q000209:etiology; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious; D012907:Smoking; D014552:Urinary Tract Infections / Q000150:complications
Estudio epidemiológíco del parto prematuro. Análisis de 19, 385 casos.