1. State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology Nanjing Medical University Nanjing China
2. Department of Endocrinology, Huai'an First People's Hospital Nanjing Medical University Huai'an China
3. Calcium Research Laboratory, McGill University Health Centre and Department of Medicine McGill University Montreal Quebec Canada