Affiliation: | 1. Department of Internal Medicine and Institute of Lifelong Health, Yonsei University Wonju College of Medicine, 162 Ilsan-dong, Wonju, 220-701, South Korea 2. Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, South Korea 3. Department of Preventive Medicine and Institute of Lifelong Health, Yonsei University Wonju College of Medicine, Wonju, South Korea 4. Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea 5. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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