3Ranch F, Schoenau E. Skeletal development in premature infants : A review of bone physiology beyond nutritional aspects [ J ]. Arch Dis Child Fetal Neonatal Ed,2002,86(2) :82-85.
4Bozzetti V ,Tagliabue P. Metabolic Bone Disease in preterm newborn: an update on nutritional issues[ J]. Ital J Pediatr,2009,35 ( ! ) :20.
6Weisman Y, Harell A, Edelstein S, et al. 1 alpha, 25 -Dihydroxyvita- rain D3 and 24,25-dihydroxy,sitamin D3 in vitro synthesis by human decidua and placenta[J]. Nature,1979,281 (5729) :317-319.
8Wagner CL, Greer FR, the Section on Breastfeeding and Committee on Nutrition. Prevention of rickets and vitamin D deficiency in infants, children, and adolescents. Pediatrics, 2008, 122 : 1142-1152.
9Garland CF,Garland FC, Gorham ED, et al. The role of vitamin D in cancer prevention. Am J Public Health, 2006, 96:252-261.
10van der Meer IM, Karamali NS, Boeke AJ. High prevalence of vitamin D deficiency in pregnant non-Western women in the Hague, Netherlands. Am J Clin Nutr, 2006, 84:350-353.
4Sakata T,Halloran BP,Elalieh HZ,et al.Skeletal unloading induces resistance to insulin-like growth factor-I on bone formation[J].Bone,2003(6):669-680.
5A rosio M,Cortelazzi D.Circulating levels of growth hormone,insulin like growth factor-I and pro lact in innormol growth retarded an anencephalic human fetuses[J].J Endocrinal Invest,2001(5):346-353.
6Rogers I,Metealfe C,Gunnell D,et al.Insulin-like growth factor-I and growth in height,leg length,and trunk length between ages 5 and 10 years[J].J Clin Endoerinol Metab,2006(7):2514-2519.