Acta Medica Okayama 2005 —Ξ”^‹Ϋ‚Μ‘½ά”roƒ|ƒ“ƒvMexVW‚̐Ά‰»Šw“I‹y‚Ρˆβ“`Šw“I‰πΝ EN No potential conflict of interest relevant to this article was reported.