Nicolson W. A study of normal ultrasound parameters in breastfeeding. MAIN Trial Collaborative Group. Brockway L. Hair colour and problems in breastfeeding. Prospective studies of the effects of breast feeding on incidence of infection and allergy. Brock-Unte JG, et al.
Maternal medication does temporarily affect neonatal behaviour.
The relationship between maternal labour analgesia and delay in the initiation of breastfeeding in healthy neonates in the early neonatal period. Widstrom AM , et al. Gastric suction in healthy newborn infants. Effect of delivery room routines on success of first breast-feed. Weber F, Woolridge MW, Baum JD .