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van Baal P, Perry-Duxbury M, Bakx P, Versteegh M, van Doorslaer E, Brouwer W.van Baal P, et al.Health Econ. 2019 Jan;28(1):87-100. doi: 10.1002/hec.3831. Epub 2018 Oct 1.Health Econ. 2019.PMID: 30273967Free PMC article.