Saima Umar, Sadia Anwar, Humaira Bashir, Muhammad Faizan, Qandeela Irum Qurashi, Umm-E-Aimen Saleem, “Use of Nitroglycerine Patch in the Management of Preterm Labor”, Pakistan Journal of Medical & Health Sciences, vol. 17, no. 01, p. 662, Mar. 2023.