Concerns of breast-feeding mothers from birth to 4 months.
D001835:Body Weight; D001942:Breast Feeding; D002652:Child Behavior; D005221:Fatigue; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D009035:Mothers / Q000523:psychology; D009558:Nipples; D010146:Pain; D049590:Postpartum Period; D011247:Pregnancy; D012494:Sampling Studies