title: Analysis of breastfeeding in northeastern Brazil: methodological and policy considerations.
mesh_terms: D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000453:epidemiology; D001938:Brazil; D001942:Breast Feeding; D003625:Data Collection / Q000379:methods*; D005260:Female; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D049590:Postpartum Period; D011247:Pregnancy; D013223:Statistics as Topic; D013997:Time Factors