“…The number of trials included in these SRs varied from seven [6,44,46] to 63 [9] and the number of participants from 728 [25] to 11,185 [9]. The number of authors in three SRs [6,12,26] is three, in four SRs [8,25,33,42] four, in four SRs [41,[44][45][46] five, and in the other four SRs is six [9], seven [47], eight [10], and nine [43]. The interventions used in these SRs were psychological interventions [6, 8-10, 25, 33, 41, 42, 44-47], prenatal educations [8,9,12,26,42,44,45,46], distraction techniques [8,9,12,42,45,46] and enhanced cares [42,43,45,46].…”