[1] Univ Connecticut, Sch Med, Pediat, Storrs, CT 06269 USA
[2] Connecticut Childrens Med Ctr, Hartford, CT 06106 USA
[3] Acad Breastfeeding Med, New Rochelle, NY 10801 USA
[4] Amer Acad Pediat, US Breastfeeding Comm, Protocol Comm, Sect Breastfeeding, Bethesda, MD 20894 USA