Affiliation: | 1. Department of Family Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan;2. Chang Gung University College of Medicine, Taoyuan, Taiwan;3. Department of Family Medicine, Chang Gung Memorial Hospital, Keelung and Chang Gung University College of Medicine, Taoyuan, Taiwan;4. Department of Family Medicine, Taipei Medical University Hospital and School of Medicine, Taipei Medical University, Taipei, Taiwan;6. Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan |