Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Chungnam National University - Department of Internal Medicine, Yonsei University - Department of Internal Medicine, Korea Advanced Institute of Science and Technology (KAIST) - Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST) - Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST) - Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST) - Graduate School of Medical Science and Engineering, Chungnam National University - Department of Internal Medicine, Chungnam National University - Department of Internal Medicine, Chungnam National University - Department of Internal Medicine, Seoul National University - Department of Internal Medicine, Seoul National University - Department of Internal Medicine, Korea Advanced Institute of Science and Technology (KAIST) - Graduate School of Medical Science and Engineering and Korea Advanced Institute of Science and Technology (KAIST) - Graduate School of Medical Science and Engineering