Corresponding author:
Hideharu HAGIYA, M.D., Ph.D.
Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan.
Tel.: +81-86-235-7342; Fax: +81-86-235-7345
E-mail: hagiya@okayama-u.ac.jp