1 Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 10051, Taiwan.
2 University Hospital, Ludwig-Maximilians-Universität, Munich, Germany.
3 Nigerian Institute of Medical Research, Lagos, Nigeria.
4 UNSW Sydney, Sydney, NSW, Australia.
5 Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 10051, Taiwan. Electronic address: mingshiang@ntu.edu.tw.