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Sakamoto, Noriyuki; Martin, Rodger G.; Kumano, Hiroaki; Kuboki, Tomifusa; Al-Adawi, Samir (2005). "Hikikomori, is it a Culture-Reactive or Culture-Bound Syndrome? Nidotherapy and a Clinical Vignette from Oman". The International Journal of Psychiatry in Medicine. 35 (2): 191–198. doi:10.2190/7WEQ-216D-TVNH-PQJ1. ISSN0091-2174. PMID16240975.