“…The median number of sample sizes per study was 450 (range, 43-4,913). Two studies were from Turkey, (Oguz Orhan et al, 2014;Dagdeviren et al, 2016), and other seven studies are from Thailand, (Sangkomkamhang and Kruangpatee, 2015), Mexico, (Neri-Mejia and Pedraza-Aviles, 2016), India, (Devi and Bhatnagar, 2017), Ireland, (Adnan et al, 2018), Eygp, (Charles et al, 2019), Argentina, (Durocher et al, 2019), and Irael, (Ashwal et al, 2022), respectively. All of participants underwent vaginal birth and used standard dose (10 iu).…”