1. Department of Family Medicine, Mackay Memorial Hospital, Taipei 104217, Taiwan
2. Department of Family Medicine, Mackay Memorial Hospital, Tamsui Branch, New Taipei City 251020, Taiwan
3. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei 100025, Taiwan
4. Department of Medicine, Mackay Medical College, New Taipei City 252005, Taiwan
5. Mackay Junior College of Medicine, Nursing and Management, New Taipei City 252005, Taiwan