1. Department of Internal Medicine (J.M.K., T.Y.K., W.B.K., Y.K.S.), Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea
2. Department of Nuclear Medicine (J.-S.R., D.H.M.), Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea
3. Department of Pathology (G.Y.K., G.G.), Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea
4. Department of Surgery (S.C.K., S.J.H.), Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea