Mengistu Welday Gebremichael, et al. “A Third of Cesarean Deliveries Were Nulliparous Term Singleton Vertex in Tigray, Ethiopia: Employing the Robson Classification”. East African Journal of Health Sciences, vol. 4, no. 1, Jan. 2022, pp. 592-03, https://doi.org/10.71624/0zapkx37.