[1] Department of Medicine and Clinical Science,
[2] Graduate School of Medical Sciences,undefined
[3] Kyushu University,undefined
[4] Maidashi 3-1-1,undefined
[5] Higashi-ku,undefined
[6] Fukuoka,undefined
[7] 812-8582,undefined
[8] Japan Tel.: +81-92-642-5256 Fax: +81-92-642-5846 e-mail: hidehide@intmed2.med.kyushu-u.ac.jp,undefined