1. Division of Nephrology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, No. 95 Wen-Chang Road, Shih-Lin District, Taipei 111, Taiwan
2. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, No. 17 Hsu Chow Road, Zhongzheng District, Taipei 100, Taiwan
3. Fu-Jen Catholic University School of Medicine, No. 510 Zhongzheng Road, Xinzhuang District, New Taipei City 24205, Taiwan