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Ligthart L, Visscher CM, van Houtem CM, Geels LM, Vink JM, de Jongh A, Boomsma DI. Comorbidity among multiple pain symptoms and anxious depression in a Dutch population sample. J Pain. 2014 Sep;15(9):945–55. doi: 10.1016/j.jpain.2014.06.007. PMID: 24981129. |