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Dibba B, Prentice A, Ceesay M, et al. Effect of calcium supplementation on bone mineral accretion in Gambian children accustomed to a low-calcium diet. Am J Clin Nutr,2000,71:544-549. 杜学勤.;北京青春期女孩维生素D营养状况对骨矿含量的影响