title: A study of breastfeeding practices in some population in north Sumatra, Indonesia.
mesh_terms: D001942:Breast Feeding; D005260:Female; D006801:Humans; D007214:Indonesia; D007223:Infant; D007231:Infant, Newborn; D011247:Pregnancy; D012424:Rural Population; D014505:Urban Population; D014931:Women, Working