1Department of Orthopaedic Surgery, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
2Department of Medicine, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 259, Taiwan
3Osteoporosis Prevention and Treatment Center, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
4Department of General Surgery, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
5Department of Chinese Medicine, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 259, Taiwan
6Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
7Community Medicine Research Center, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
8Institute of Molecular Biology, Academia Sinica, Nankang, 115 Taipei, Taiwan
9Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan