1. School of Public Health, University of California, Berkeley, Berkeley, California, USA
2. Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei
3. Division of Respirology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Centre for Disease Control, Vancouver, British Columbia, Canada
4. Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei, Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Division of Nephrology, Department of Internal Medicine, School of Medicine, College
of Medicine, Taipei Medical University, Taipei
5. Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan