Anjum, Naveed, et al. “Epidemiological Trends of Lung Tumours on Endobronchial Biopsy in Patients Presenting to Tertiary Care Hospital”. Pakistan Armed Forces Medical Journal, vol. 73, no. 3, June 2023, pp. 921-24, https://doi.org/10.51253/pafmj.v73i3.9362.