[1] I Shou Univ, Coll Med, Sch Med, Kaohsiung 82445, Taiwan
[2] E Da Canc Hosp, Dept Gen Surg, Kaohsiung 82445, Taiwan
[3] Kaohsiung Med Univ Hosp, Dept Neurol, Kaohsiung 80708, Taiwan
[4] Kaohsiung Med Univ, Dept Neurol, Kaohsiung 80708, Taiwan
[5] Kaohsiung Vet Gen Hosp, Div Neurol, Kaohsiung 81341, Taiwan
[6] Kaohsiung Municipal United Hosp, Dept Surg, Kaohsiung 80457, Taiwan
[7] Natl Sun Yat Sen Univ, Dept Business Management, Kaohsiung 80424, Taiwan
[8] St Joseph Hosp, Dept Internal Med, Kaohsiung 80288, Taiwan
[9] Yuans Gen Hosp, Dept Internal Med, Div Neurol, Kaohsiung 80249, Taiwan
[10] Chiayi Chang Gung Hosp, Dept Med Res, Chiayi 61301, Taiwan
[11] Kaohsiung Med Univ, Dept Healthcare Adm & Med Informat, Kaohsiung 80708, Taiwan
[12] Kaohsiung Med Univ Hosp, Dept Med Res, Kaohsiung 08708, Taiwan
[13] China Med Univ, China Med Univ Hosp, Dept Med Res, Taichung 40402, Taiwan