Corresponding author:
Name: Yuki Otsuka, M.D.
Affiliation: Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
Mailing address: 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
Phone number: +81-86-235-7342, Fax number: +81-86-235-7345
E-mail address:otsuka@okayama-u.ac.jp