2012
2012年1月10日 00時00分１０．Tochigi M, Nishida A, Shimodera S, Oshima N, Inoue K, Okazaki Y, Sasaki T (2012) Irregular bedtime and nocturnal cellular phone usage as risk factors for being involved in bullying: a cross-sectional survey of Japanese adolescents. PLoS One. 2012;7(9):e45736. Epub 2012 Sep 19.