1. Department of Internal Medicine and Biochemistry and Cell Biology (H.-Y.S., Y.D.K., K.-M.L., I.-K.L.), Kyungpook National University School of Medicine, Daegu 700-721, Republic of Korea
2. Department of Internal Medicine and Institute for Medical Science (A.-K.M., M.-K.K., H.-S.K., K.-G.P.), Keimyung University School of Medicine, Daegu 700-712, Republic of Korea
3. Department of Internal Medicine (K.-C.W.), Yeungnam University College of Medicine, Daegu 705-717, Republic of Korea
4. Department of Internal Medicine (J.-Y.P., K.-U.L.), University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea
5. Hormone Research Center (H.-S.C.), School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea