“…The digital education included offline computer-based tutorials (22,26,29,32,35), online computer based tutorial (30,31,34) and computer-based learning-software (25,27,28,33). The comparators were traditional education (22,25,26,28,30,32,33,35), or no education (27,29,31,34). Nine studies (75%) assessed the knowledge improvement by MCQ (multiple choice questions) (27,(30)(31)(32)34), written examinations (22,33,35) and questionnaires (28).…”