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1Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
2Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
3Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
4Department of Internal Medicine, Veterans Health Service Medical Center, Seoul, Korea
5Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
6Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
7Thyroid Center, Chung-Ang University Hospital, Seoul, Korea
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