Gen Komaki1
, Yoshiya Moriguchi1,2
, Tetsuya Ando1
, Kazuhiro Yoshiuchi3
and Mutsuhiro Nakao4,5 
1
Department of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
2
Department of Psychology, Boston College, Boston, USA
3
Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
4
Department of Hygiene and Public Health, Teikyo University School of Medicine, Itabashi, Tokyo, Japan
5
Division of Psychosomatic Medicine, Teikyo University Hospital, Itabashi, Tokyo, Japan