Kashif, Muhammad, Shahana Shahid, Wahaj Ul Hassan, M. Zeeshan Siddiqui, Muhammad Saqib, and M. Aasim Yusuf. 2023. “Positivity Rate of Universal PCR Screening for COVID-19 Pre-Endoscopy and Its Impact on Diagnosis and Management of New Cancer Patients at a Cancer Centre in Pakistan”. Pakistan Armed Forces Medical Journal 73 (5): 1293-96. https://doi.org/10.51253/pafmj.v73i5.8050.