Corresondence: Yukifumi Nawa, paras@macqm.miyazaki-med.ac.jp
Masaki TOMITA
Hideki ICHINARI
Yasunori MATSUZAKI
Koichiro SHIBATA
Yasunori KOGA

2nd Department of Surgery, Miyazaki Medical College, Kiyotake, Miyazaki 889-16, Japan

Ryoko YAMAGUCHI
Hiroshi MUKAI
Hideo MASUMOTO
Shigeru MATSUKURA

3rd Department of Internal Medicine, Miyazaki Medical College, Kiyotake, Miyazaki 889-16, Japan

Haruhiko MARUYAMA
Yukifumi NAWA

Department of Parasitology, Miyazaki Medical College, Kiyotake, Miyazaki 889-16, Japan