1 Taipei Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan; College of Medicine, Taipei Medical University, Taipei, Taiwan.
2 Department of Internal Medicine, National Taiwan University Hospital, Hsin-Chu, Taiwan; College of Medicine, National Taiwan University, Taipei 100225, Taiwan.
3 Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan; School of Medicine and Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
4 College of Medicine, National Taiwan University, Taipei 100225, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan. Electronic address: pcyang@ntu.edu.tw.