Journal Article
                        
                        Ling, XU, Steven R Cummings, Qin  Mingwei, Zhao  Xihe, Chen  Xioashu, Michael  Nevitt, and Katie  Stone.  
"Vertebral fractures in Beijing, China: the Beijing osteoporosis project." Journal of Bone and Mineral Research 15, no. 10 (2000): 2019-2025.