[1] Natl Taiwan Univ, Inst Epidemiol & Prevent Med, Coll Publ Hlth, Taipei 10055, Taiwan
[2] I Shou Univ, Coll Med, Kaohsiung, Taiwan
[3] E Da Hosp, Dept Internal Med, Kaohsiung, Taiwan
[4] Natl Taiwan Univ Hosp, Dept Internal Med, Taipei 100, Taiwan
[5] Natl Taiwan Univ Hosp, Dept Internal Med, Hsinchu, Taiwan
[6] Natl Taiwan Univ Hosp, Natl Ctr Excellence Clin Trial & Res, Ctr Comparat Effectiveness Res, Taipei, Taiwan
[7] Natl Taiwan Univ, Coll Med, Grad Inst Oncol, Taipei 10055, Taiwan
[8] Natl Taiwan Univ Hosp, Dept Med Res, Taipei, Taiwan