1 School of Humanities, Hokusei Gakuen University, 2-3-1 Ohyachi-Nishi, Atsubetsu-ku, Sapporo, Hokkaido 004-8631, Japan.
2 Department of Disaster and Community Psychiatry, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba City, Ibaraki 305-8575, Japan. Electronic address: tachikawa@md.tsukuba.ac.jp.
3 Health Support Center, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Yokohama, Kanagawa 226-8503, Japan.
4 University Health Center, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
5 Health Services, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto 606-8501, Japan.
6 Health and Medical Services Center, Shiga University, 1-1-1 Banba, Hikone, Shiga 522-8522, Japan.
7 Health and Counseling Center, Osaka University, 1-17 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
8 Health Support Center, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.