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van Ede AE, Laan RF, Blom HJ, Boers GH, Haagsma CJ, Thomas CM, De Boo TM, van de Putte LB.van Ede AE, et al. Among authors: boers gh.Rheumatology (Oxford). 2002 Jun;41(6):658-65. doi: 10.1093/rheumatology/41.6.658.Rheumatology (Oxford). 2002.PMID: 12048292Clinical Trial.