%0 Journal Article %B Ann Surg %D 2015 %G eng %N 5 %P 821-8 %R 10.1097/SLA.0000000000000716 %T Effect of the World Health Organization checklist on patient outcomes: a stepped wedge cluster randomized controlled trial. %V 261 %1 https://www.ncbi.nlm.nih.gov/pubmed/24824415 %8 05/2015