Farooq, N.; Roghani, P.; Afza, N.; Saleem, A.; Farooq, A. 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 2025, 6, 241-245.