Branko Aleksic1, Norio Ozaki2. 1. Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan. 2. Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan. Electronic address: ozaki-n@med.nagoya-u.ac.jp.