Khalid, Aisha, Asad Mahmood Khan, Attia Anwar, Mubin Yousaf, Obaid Anwar, and Abida Parveen. 2019. “Comparison Between Glyceryl Trinitrate and Ritodrine As a Tocolytic Agent in Pre-Term Labour”. Annals of Punjab Medical College 13 (1), 1-3. https://doi.org/10.29054/apmc/2019.24.