Zahid, M., Tahir, N., Quadri, K. H. M., Azhar, A., Shabir, M. M., Wahab, A., Urfi, U., Waqar, K. ., & Nadeem, D. (2022). Mental health status of medical staff working in hospitals during COVID-19 pandemic in Pakistan: A cross-sectional study. Principles and Practice of Clinical Research, 8(1). https://doi.org/10.21801/ppcrj.2022.81.1