Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan; Center for General Education, Cheng Shiu University, Kaohsiung, Taiwan; Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan. Department of Adult Psychiatry, Kaohsiung Municipal Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan. Department of Mathematics, Tamkang University, Taipei, Taiwan. Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan. Department of Psychiatry, Taichung Chin-Ho Hospital, Taichung, Taiwan. Department of Nutrition, China Medical University, Taichung, Taiwan. Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan; Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan. Electronic address: hylane@gmail.com.