1. Berfenstam R (1952) Studies on blood zinc. A clinical and experimental investigation into the zinc content of plasma and blood corpuscles with special reference to infancy. Acta Pediat Scand 41 (Supple 87):5?105
2. Cavell PA, Widdowson EM (1964) Intakes and excretions of iron, copper and zinc in the neonatal period. Arch Dis Child 39:490?501
3. Committee on Nutrition (1978) Commentary on breast-feeding and infant formulas, including proposed standards for formulas. Pediatrics 57:278?285
4. Commettee on Nutrition (Barness LA et al.) (1978) Zinc. Pediatrics 62:408?412
5. European Society for Pediatric Gastroenterology and Nutrition (1977) Guidelines on infant nutrition. I. Recommendation for the composition of adapted formula. Acta Pediat Scand (Sappl 262): 2?20