1. Department of Neurology Chang Gung University College of Medicine Kaohsiung Taiwan
2. Center for Parkinson's Disease Kaohsiung Chang Gung Memorial Hospital, and Chang Gung University College of Medicine Kaohsiung Taiwan
3. Institute of Molecular Medicine, College of Life Sciences, National Tsing Hua University Hsinchu Taiwan
4. Department of Medical Science, College of Life Sciences National Tsing Hua University Hsinchu Taiwan
5. Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital Kaohsiung Taiwan
6. Department of Senior Citizen Services National Tainan Institute of Nursing Tainan Taiwan