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Gates A, Shave K, Featherstone R, Buckreus K, Ali S, Scott S, Hartling L.Gates A, et al. Among authors: hartling l.Syst Rev. 2017 Jun 6;6(1):109. doi: 10.1186/s13643-017-0499-2.Syst Rev. 2017.PMID: 28587663Free PMC article.
Gates A, Johnson C, Hartling L.Gates A, et al. Among authors: hartling l.Syst Rev. 2018 Mar 12;7(1):45. doi: 10.1186/s13643-018-0707-8.Syst Rev. 2018.PMID: 29530097Free PMC article.