[Breast feeding of infants under 6 months of age in 20 provinces, cities and autonomous regions].
D001942:Breast Feeding; D002681:China; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012424:Rural Population; D011795:Surveys and Questionnaires; D014505:Urban Population