“…The development process of the cognitive aid differed between trials and included: consideration of the design and format in two trials [ 20 , 27 ]; literature review, publication guidelines and/or international recommendations in 10 trials [ 20 , 21 , 22 , 23 , 24 , 26 , 27 , 31 , 32 , 33 , 34 , 35 ]; iterative revision until consensus was reached in five trials [ 20 , 23 , 24 , 27 , 31 , 32 ]; and testing in four trials [ 27 , 31 , 32 , 33 , 34 ]. The included cognitive aids consisted of three algorithms [ 20 , 21 , 27 ], seven checklists [ 22 , 23 , 24 , 25 , 31 , 32 , 33 , 34 , 35 ], one hybrid checklist and guideline [ 29 , 30 ] and two in which the type was not specified [ 26 , 28 ]. Seven cognitive aids were presented on paper [ 21 , 22 , 23 , 24 , 25 , 27 , 33 , 34 , 35 ], five electronically [ 20 , 28 …”