Addressing knowledge gaps in Surgical Safety Checklist use: statistical process control analysis of a surgical quality improvement programme in Ethiopia.

Nofal MR, Starr N, Negussie Mammo T, Trickey AW, Gebeyehu N, Koritsanszky L, Alemu M, Tara M, Alemu SB, Evans F, Kahsay S, Weiser TG.