1. Institute of Medical Sciences, Tzu Chi University, Hualien 970374, Taiwan, R.O.C.
2. School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404328, Taiwan, R.O.C.
3. Department of Otolaryngology, Head and Neck Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427213, Taiwan, R.O.C.
4. Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833401, Taiwan, R.O.C.