1. From the Department of Radiology and Research Institute of Radiology (H.J.K., J.C., K.H.D.), Division of Infectious Disease, Department of Internal Medicine (S.H.C.), and Department of Laboratory Medicine (H.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, South Korea.