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Lafeber FP, van Roy HL, van der Kraan PM, van den Berg WB, Bijlsma JW.Lafeber FP, et al.J Rheumatol. 1997 Mar;24(3):536-42.J Rheumatol. 1997.PMID: 9058662
van Valburg AA, van Roy HL, Lafeber FP, Bijlsma JW.van Valburg AA, et al. Among authors: lafeber fp.J Rheumatol. 1998 Mar;25(3):515-20.J Rheumatol. 1998.PMID: 9517773
Lafeber FP, Beukelman CJ, van den Worm E, van Roy JL, Vianen ME, van Roon JA, van Dijk H, Bijlsma JW.Lafeber FP, et al.Rheumatology (Oxford). 1999 Nov;38(11):1088-93. doi: 10.1093/rheumatology/38.11.1088.Rheumatology (Oxford). 1999.PMID: 10556260