“…12 The most frequently cited barriers were "lack of knowledge/skills" (20 out of 39), 16,24,25,[30][31][32][33]35,[40][41][42][43][44]46,47,49,51,52,58,59 "lack of time/ high workload" (11 out of 39) 12,29,30,32,33,43,48,51,53,55,59 and "own disbeliefs" (9 out of 39). 17,19,25,30,[39][40][41]50,57 Lack of knowledge/skills Lack of knowledge or skills was the most common reported barrier and mentioned in studies with completely different clinical targets, eg, in studies addressing cardiovascular risk factors, 24,25,30 cancer prevention, 31,33 addiction prevention 40,41 or in different prevention interventions for infectious diseases.…”