1. Department of Otolaryngology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan;
2. School of Medicine, Chang Gung University, Taoyuan, Taiwan;
3. Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan;
4. Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan;
5. Graduate School of Management, Ming Chun University, Taipei, Taiwan