1. Dalla Lana School of Public Health; University of Toronto; Toronto Ontario Canada
2. Department of Medical Research; Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation; Dalin Chiayi Taiwan
3. Division of Otolaryngology; Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation; Dalin Chiayi Taiwan
4. Sleep Center; Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation; Dalin Chiayi Taiwan
5. School of Medicine; Tzu Chi University; Hualien Taiwan