‰ªŽRˆãŠw‰ï Acta Medica Okayama 0030-1558 123 2 2011 �ã˜r�œŠO‘¤�ãè÷‰Š‚Ì�f—ÃKƒCƒhƒ‰ƒCƒ“ 141 144 EN Yasunori Shimamura Madoka Inoue Masatugu Ozawa Tomoko Kanazawa Taiichi Saitou Ryuichi Nakahara Tomoyuki Noda Keiichiro Nishida Toshifumi Ozaki No potential conflict of interest relevant to this article was reported.