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Butler RJ, Johnson WG.Butler RJ, et al. Among authors: johnson wg.Spine J. 2008 May-Jun;8(3):510-21. doi: 10.1016/j.spinee.2007.04.006. Epub 2007 May 25.Spine J. 2008.PMID: 17602887
Butler RJ, Wilson BL, Johnson WG.Butler RJ, et al. Among authors: johnson wg.Health Econ. 2012 Feb;21(2):113-26. doi: 10.1002/hec.1699. Epub 2010 Dec 15.Health Econ. 2012.PMID: 22223556
Butler RJ, Johnson WG.Butler RJ, et al. Among authors: johnson wg.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
Butler RJ, Johnson WG, Côté P.Butler RJ, et al. Among authors: johnson wg.J Occup Environ Med. 2007 Feb;49(2):214-25. doi: 10.1097/jom.0b013e318032211d.J Occup Environ Med. 2007.PMID: 17293761
Butler RJ, Johnson WG, Gray BP.Butler RJ, et al. Among authors: johnson wg.Prof Case Manag. 2007 Nov-Dec;12(6):316-27; quiz 328-9. doi: 10.1097/01.PCAMA.0000300404.07948.86.Prof Case Manag. 2007.PMID: 18030151
Wilson BL, Butler MJ, Butler RJ, Johnson WG.Wilson BL, et al. Among authors: johnson wg.J Nurs Scholarsh. 2018 Jan;50(1):102-108. doi: 10.1111/jnu.12356. Epub 2017 Nov 8.J Nurs Scholarsh. 2018.PMID: 29116683
Rimsza ME, Butler RJ, Johnson WG.Rimsza ME, et al. Among authors: johnson wg.Pediatrics. 2007 May;119(5):e1026-32. doi: 10.1542/peds.2006-2747.Pediatrics. 2007.PMID: 17473075