‰ªŽRˆãŠw‰ï Acta Medica Okayama 0030-1558 124 1 2012 Damus-Kaye-Stansel•«�‡ 9 13 EN Yasuhiro Fujii Shunji Sano Sadahiko Arai Shingo Kasahara Atsushi Tateishi Masami Takagaki Yasufumi Fujita Susumu Ozawa No potential conflict of interest relevant to this article was reported.