Takeo Shibata Yoichi Ogushi Teppei Ogawa Takashi Kanno Estimation of Sex-Age Specific Clinical Reference Ranges by Nonlinear Optimization Method. 229-234 2005 MIE http://ebooks.iospress.nl/volumearticle/10305 conf/mie/2005 db/conf/mie/mie2005.html#ShibataOOK05