[1] Natl Taiwan Univ Hosp, Dept Geriatr & Gerontol, Taipei 100, Taiwan
[2] Natl Taiwan Univ Hosp, Dept Internal Med, Taipei 100, Taiwan
[3] Natl Taiwan Univ Hosp, Superintendents Off, Chu Tung Branch, Hsinchu 310, Taiwan
[4] Natl Taiwan Univ Hosp, Dept Internal Med, Chu Tung Branch, Hsinchu 310, Taiwan
[5] Natl Taiwan Univ Hosp, Dept Phys Med & Rehabil, Bei Hu Branch, Taipei, Taiwan
[6] Chang Gung Univ, Chang Gung Mem Hosp, Div Endocrinol & Metab, Taoyuan 333, Taiwan
[7] Natl Taiwan Univ Hosp, Dept Lab Med, Taipei 100, Taiwan
[8] Natl Taiwan Univ Hosp, Dept Orthoped, Room 11-17,Res Build 7,Chungshan S Rd, Taipei 100, Taiwan