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↑ Reiss AL, Hoeft F, Tenforde AS, Chen W, Mobbs D, Mignot EJ (2008), “Anomalous hypothalamic responses to humor in cataplexy”, PLoS ONE 3 (5): e2225, doi:10.1371/journal.pone.0002225, PMC 2377337, PMID 18493621, http://www.plosone.org/article/info:doi/10.1371/journal.pone.0002225