1. From the Departments of Internal Medicine (M.-J.K., K.-G.P., K.-M.L., H.-S.K., I.-K.L.) and Institute for Medical Science, Physiology (S.-Y.K.), and Pediatrics (C.-S.K., S.-L.L.), Keimyung University School of Medicine, Daegu; Department of Pathology (Y.-C.C.), Catholic University of Daegu, School of Medicine, Daegu; and the Department of Internal Medicine (J.-Y.P., K.-I.U.), University of Ulsan College of Medicine, Seoul, Korea.