1Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Daejeon, Korea.
2Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.
3Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
4Department of Family Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
Copyright © 2014 Korean Diabetes Association
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.