| Affiliation: | (1) Department of Counseling and Educational Psychology, Center for Research and Development in Education, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan;(2) Health and Social Behavior Research Laboratory, Faculty of Education, Tokyo Gakugei University, 4-1-1 Nukuikita-machi, Koganei Tokyo, 184-8501, Japan;(3) Department of Internal Medicine, Okayama Citizen's Hospital, 6-10 Amase, Okayama 700-8557, Japan;(4) Prevention Research Branch, Division of Epidemiology Statistics and Prevention Research, National Institute of Child Health and Human Development, National Institutes of Health, 6100 Executive Boulevard, 7B05, Bethesda, Maryland 20892-7510, USA |
