Affiliation: | (1) Department of Radiology, Tsukuba University School of Medicine, Nimari-Gun, 300-31 Ibaraki-Ken, Japan;(2) Department of Pediatric Surgery, Tsukuba University School of Medicine, Nimari-Gun, 300-31 Ibaraki-Ken, Japan;(3) Department of Pathology, Tsukuba University School of Medicine, Nimari-Gun, 300-31 Ibaraki-Ken, Japan |