[1] Chung Shan Med Univ Hosp, Dept Psychiat, Taichung 402, Taiwan
[2] Cent Taiwan Univ Sci & Technol, Ctr Gen Educ, Taichung 406, Taiwan
[3] Changhua Christian Hosp, Dept Psychiat, Changhua 500, Taiwan
[4] Changhua Christian Hosp, Lu Tung Branch, Dept Psychiat, Lugang Township 505, Changhua County, Taiwan
[5] Changhua Christian Hosp, Yun Lin Branch, Dept Psychiat, Xiluo Township 648, Yunlin County, Taiwan
[6] Chung Shan Med Univ Hosp, Dept Family & Community Med, Taichung 402, Taiwan
[7] Chung Shan Med Univ, Ctr Educ & Res Geriatr & Gerontol, Taichung 402, Taiwan
[8] Chung Shan Med Univ, Inst Med, Taichung 402, Taiwan
[9] Changhua Christian Hosp, Dept Neurol, Changhua 500, Taiwan