1. Center for Drug Abuse and Addiction, China Medical University Hospital, 2 Yuh-Der Road, Taichung 40447, Taiwan
2. China Medical University, Taichung, Taiwan
3. Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
4. Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Miaoli County, Taiwan