[1] Natl Taiwan Univ Hosp, Dept Oncol, Taipei, Taiwan
[2] Natl Taiwan Univ, Grad Inst Clin Med, Coll Med, Taipei 10764, Taiwan
[3] Natl Taiwan Univ Hosp, Ctr Comparat Effectiveness Res, Natl Ctr Excellence Clin Trial & Res, Taipei, Taiwan
[4] Natl Taiwan Univ Hosp, Natl Clin Trial & Res Ctr, Ctr Comparat Effectiveness Res 4, Taipei, Taiwan
[5] Natl Taiwan Univ Hosp, Taipei, Taiwan
[6] Natl Taiwan Univ, Coll Publ Hlth, Inst Epidemiol & Prevent Med, Taipei 10764, Taiwan