“…We found no RCT comparing prone to standard supine CPR. Three of the included studies [ [9] , [10] , [11] ] had a nonrandomized design and 31 were case reports [ [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] ]. In this section, the included nonrandomized studies are described; a complete description of all the studies, including case reports, is provided with details in Table 1 .…”