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Pascual-Vera, B. ., Akin, B. ., Belloch, A. ., Bottesi, G. ., Clark, D. ., Doron, G. ., … Sica, C. . (1969). Maladaptive Consequences of Mental Intrusions with Obsessive, Dysmorphic, Hypochondriac, and Eating-disorders Related Contents: Cross-cultural Differences. International Journal of Clinical and Health Psychology : IJCHP, 22(1), 100275. https://doi.org/10.1016/j.ijchp.2021.100275 (Original work published 1969)