Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sakai Motohiro and Nakamura Hikaru and Ueda Kenta and Sakano Yuji,Correlation between Problem Behaviors and Field of Activity of Individuals with Hikikomori,Japanese Journal of Psychosomatic Medicine,03850307,Japanese Society of Psychosomatic Medicine,2007,47,10,865-873,https://cir.nii.ac.jp/crid/1390001204891851008,https://doi.org/10.15064/jjpm.47.10_865