1Ling X, Cummings SR, Mingwei Q, et al. Vertebral fractures in Beijing, China: the Beijing Osteoporosis Project[J]. J Bone Miner Res,2000,15 (10) :2019-2025.
2Xia WB, He SL, Xu L. Hip fracture in Beijing 2002-2006 [ J ]. Bone, 2008,43( Suppl 1 ) :S13.
3Michael F. Holick. Vitamin D deficiency[J]. N Engl J Med,2007,357 (3) :266-281.
4Holick MF, Garabedian M. Vitamin D : photobiology, metabolism, mechanism of action, and clinical applications [ M ]. In : favus M J, ed. Primer on the metabolic bone diseases and disorders of mineral metabolism. 6th ed. Washington, DC : American society for Bone and Mineral Research, 2006 : 129-137.
5Lips P. Vitamin D deficiency and secondary hyperparathyroidism in the elderly: Consequences for bone loss and fractures and therapeutic implications [ J ]. Endocrine Reviews, 2001,22(4) :477-501.
6Zadshir A, Tareen N, Pan D, et al. The prevalence of hypovitaminosis D among US adults: data from the NHANES Ⅲ [ J]. Ethn Dis,2005,15 (4 Suppl 5) :S5-S101.
7Hunter D, Major P,Arden N, et al. A randomized controlled trial of vitamin D supplementation on preventing postmenopausal bone loss and modifying bone metabolism using identical twin pairs [ J]. J Bone Miner Res, 2000,15 ( 11 ) :2276-2283.
8Dawson-Hughes B, Harris SS, Krall EA, et al. Effect of calcium and vitamin D supplementation on bone density in men and women 15 years of age or older [J]. N Engl J Med, 1997,337 (10) :670-676.
9Looker AC, Dawson-Hughes B, Calvo MS, et al. Serum 25-hydroxyvitamin D status of adolescents and adults in two seasonal subpopulations from NHANES Ⅲ [ J ]. Bone, 2002, 30(5) :771-777.
10Bischoff-Ferrari HA, Dietrich T, Orav EJ, et al. Higher 25-hydroxyvitamin D concentrations are associated with better lower-extremity function in both active and inactive persons aged over 60[J]. Am J Clin Nutr,2004, 80(3) :752-758.
9Andrzej L, Ludwik A, Rodney J. Bartlett.Relative stabilily of cytosine tautomers with the coupled cluster method and first-order correlation orbitals[J]. Phys Chem, 1989,93(10): 4001-4005.
10Schechter R S, Bourrel M. Microenmusions and Related Systems[M]. New York:Marcel Dekker, 1998:160-185.