Maeda Tetsuo, Tateishi Ukihide, Sasajima Yuko, Hasegawa Tadashi, Daisaki Hiromitsu, Arai Yasuaki, Sugimura Kazuro
Division of Diagnostic Radiology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-Ku, Tokyo, Japan 104-0045.
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