“…Regarding the reported mode of birth in the included studies, four studies examined one mode of birth, i.e., vaginal birth [ 36 , 54 , 55 ] or emergency caesarean section (emergency CS) [ 56 ], whereas two studies examined two modes of birth, i.e., vaginal birth and caesarean section (CS) [ 22 , 57 ]. Six studies differentiated between vaginal birth, operative vaginal birth and CS [ 37 , 38 , 58 , 59 , 60 , 61 ], whereas three studies differentiated between vaginal birth, elective caesarean section (elective CS) and emergency CS [ 62 , 63 , 64 ]. Eleven studies distinguished between vaginal birth, operative vaginal birth, elective CS and emergency CS [ 18 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 ].…”