1. Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany;
2. Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan;
3. Addiction Research Centre, National Cheng Kung University, Tainan, Taiwan;
4. Department of Neurology, University Medical Hospital Bergmannsheil, Bochum, Germany