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Cassidy TA, DasMahapatra P, Black RA, Wieman MS, Butler SF.Cassidy TA, et al. Among authors: butler sf.Pain Med. 2014 Mar;15(3):440-51. doi: 10.1111/pme.12295. Epub 2013 Dec 11.Pain Med. 2014.PMID: 24330279
McCaffrey SA, Black RA, Villapiano AJ, Jamison RN, Butler SF.McCaffrey SA, et al. Among authors: butler sf.Pain Med. 2019 Jan 1;20(1):113-118. doi: 10.1093/pm/pnx311.Pain Med. 2019.PMID: 29237039
Coyne KS, Barsdorf AI, Brooks A, Mazière JY, Pierson RF, Butler SF, Schnoll SH.Coyne KS, et al. Among authors: butler sf.Curr Med Res Opin. 2021 Mar;37(3):505-514. doi: 10.1080/03007995.2020.1865891. Epub 2021 Jan 18.Curr Med Res Opin. 2021.PMID: 33331184Free article.