(1)
Tanzeela Firdous, Ali Kashif, Sahira Nawaz Khan, Ayesha Waqar, Sufyan Ali, Sumayya Tariq. Compare the Mean Non Hypoxic Apnea Duration of 20° Head up With Conventional Supine Position During Pre-Oxygenation in Patients Undergoing Elective Surgery. Pakistan Journal of Medical & Health Sciences 2022, 16, 397.