“…Three studies were randomized controlled, [10,24,25] 9-quantitative nonrandomized, [13,14,16,17,[19][20][21][22][23] 1-quantitative descriptive, [18] 1-qualitative. [15] Study participants included emergency medical service physicians, [13][14][15][16]25] physicians of other specialities, [16,17,[20][21][22]25] interns/residents, [18,19,23,25] medical students, [19,25] nurses [22] and cadets of the fire and rescue service academy. [10,24] Sample size varied from 26 [13] to 621.…”