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Côté P, Baldwin ML, Johnson WG, Frank JW, Butler RJ.Côté P, et al. Among authors: butler rj.Eur Spine J. 2008 Apr;17(4):484-93. doi: 10.1007/s00586-007-0577-6. Epub 2008 Jan 23.Eur Spine J. 2008.PMID: 18214554Free PMC article.
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Baldwin ML, Johnson WG, Butler RJ.Baldwin ML, et al. Among authors: butler rj.Am J Ind Med. 1996 Jun;29(6):632-41. doi: 10.1002/(SICI)1097-0274(199606)29:6<632::AID-AJIM7>3.0.CO;2-L.Am J Ind Med. 1996.PMID: 8773723
Butler RJ, Johnson WG.Butler RJ, et al.Int J Health Econ Manag. 2016 Sep;16(3):269-283. doi: 10.1007/s10754-016-9190-8. Epub 2016 May 9.Int J Health Econ Manag. 2016.PMID: 27878677