N. Farooq, P. Roghani, N. Afza, A. Saleem, and A. Farooq, “Frequency of Obstetrical Anal Sphincter Injuries in Nulliparous Women Undergoing Normal Vaginal Delivery in Tertiary Care Hospital at Khyber Pakhtunkhwa: OASI in Nulliparous Women Undergoing Normal Vaginal Delivery ”, PJHS-Lahore, vol. 6, no. 3, pp. 241–245, Mar. 2025.