TY - JOUR AU - Waldenström, U; Aarts, C TI - Duration of breastfeeding and breastfeeding problems in relation to length of postpartum stay: a longitudinal cohort study of a national Swedish sample JO - Acta Paediatr IS - 05 VL - 93 PY - 2004 DO - 10.1111/j.1651-2227.2004.tb02995.x L3 - PubMed-ID: 15174793 SP - 669 EP - 676 N1 - Doi: 10.1111/j.1651-2227.2004.tb02995.x ER -