Acta Medica Okayama 2002 Œû�o�G•½�ã”çŠà•úŽË�ü�ÆŽËŒø‰Ê‚ÉŠÖ‚·‚é–Ɖu‘g�D‰»Šw“IŒ¤‹† EN No potential conflict of interest relevant to this article was reported.