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sponsorship: Johan W.S. Vlaeyen was supported by the Social Sciences Research Council of the Netherlands (NWO), and the Research Foundation, Flanders, Belgium (FWO Vlaanderen). Steven J. Linton received grants from the Swedish Council for Working Life and Social Research. (Social Sciences Research Council of the Netherlands (NWO), Research Foundation, Flanders, Belgium (FWO Vlaanderen), Swedish Council for Working Life and Social Research)
Vlaeyen et al. (Wed,) studied this question.