“…Basic CPR maneuvers were the target of eight studies [ 19 , 22 , 23 , 26 , 29 , 30 , 32 , 33 ], while the remaining considered advanced CPR maneuvers [ 18 , 20 , 24 , 25 , 27 , 28 , 31 ]. Moreover, five studies focused on the initial CPR training [ 20 , 22 , 25 , 27 , 32 ], two the retraining [ 24 , 33 ], while the remainder did not specify [ 18 , 19 , 23 , 26 , 28 – 31 ]. Studies were conducted mainly in hospitals [ 19 , 22 , 28 – 30 , 32 , 33 ], training centers [ 20 , 23 – 25 ], and universities [ 18 , 27 ]; two studies did not specify the setting [ 26 , 31 ].…”