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Epker JL, van Biezen P, van Daele PL, van Gelder T, Vossen A, van Saase JL.Epker JL, et al.Eur J Intern Med. 2009 May;20(3):261-7. doi: 10.1016/j.ejim.2008.07.032. Epub 2008 Aug 29.Eur J Intern Med. 2009.PMID: 19393493Review.