Pinnock, H. ., Epiphaniou, E. ., Sheikh, A. ., Griffiths, C. ., Eldridge, S. ., Craig, P. ., & Taylor, S. . (2015). Developing standards for reporting implementation studies of complex interventions (StaRI): a systematic review and e-Delphi. Implementation Science : IS, 10, 42. https://doi.org/10.1186/s13012-015-0235-z (Original work published 2015)

Thomson, H. ., Craig, P. ., Hilton-Boon, M. ., Campbell, M. ., & Katikireddi, S. . (2018). Applying the ROBINS-I tool to natural experiments: an example from public health. Systematic Reviews, 7(1), 15. https://doi.org/10.1186/s13643-017-0659-4 (Original work published 2018)