2Andiran Nesibe, Yordam Nursen, Ozon, Alev. Risk faeors for vitamin D deficiency in breast-fed newborns and their mothers. Nutrition (Burband, Los Angeles County, Calif. ) (United states) Jan 2002; 18 (1): 47.
3Roddy G. VitD physiology during th perinatal period form "Perinnatal Medicine". Edited by Robert Boyd and Battaglia F C. 1983:201.
4Thacher TD, Fischer PR, Pettifor JM, et al. Case-control study of [actors associated with nutritional rickets in Nigerian children. Journal of Pediatrics (United states) Sep 2000; 137 (3): 367.
