Affiliation: | 1. Department of Internal Medicine and AIDS Research Institute, , Seoul, South Korea;2. Department of Psychiatry, Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, , Seoul, South Korea;3. Department of Internal Medicine, Korea University College of Medicine, , Seoul, South Korea;4. Department of Medicine, University of California San Diego, , La Jolla, CA, USA;5. Veterans Affairs San Diego Healthcare System, , San Diego, CA, USA |