1. Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan 33378, Taiwan
2. School of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
3. Healthy Aging Research Center, Chang Gung University, Taoyuan 33302, Taiwan
4. Division of Acupuncture and Moxibustion, Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Linkou 33305, Taiwan
5. Sleep Center, Chang Gung Memorial Hospital, Taoyuan 33378, Taiwan
6. School of Traditional Chinese Medicine, Chang Gung University, Taoyuan 33302, Taiwan
7. Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan