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Simpson SA, Butler CC, Hood K, Cohen D, Dunstan F, Evans MR, Rollnick S, Moore L, Hare M, Bekkers MJ, Evans J; STAR Study Team.Simpson SA, et al.BMC Fam Pract. 2009 Mar 23;10:20. doi: 10.1186/1471-2296-10-20.BMC Fam Pract. 2009.PMID: 19309493Free PMC article.Clinical Trial.
Simpson SA, Thomas CL, van der Linden MK, Macmillan H, van der Wouden JC, Butler C.Simpson SA, et al.Cochrane Database Syst Rev. 2007 Jan 24;2007(1):CD004163. doi: 10.1002/14651858.CD004163.pub2.Cochrane Database Syst Rev. 2007.PMID: 17253499Free PMC article.Review.
Butler CC, Simpson S, Wood F.Butler CC, et al.Scand J Prim Health Care. 2008;26(1):17-21. doi: 10.1080/02813430701726285.Scand J Prim Health Care. 2008.PMID: 18297558Free PMC article.