C. M. Q. U. H. Noor, W. Alamgir, G. Ahmad, M. A. Channa, M. U. Rafique, and A. Ahmed, “COVID-19 Breakthrough Cases: A Descriptive Study from Pakistan Naval Hospitals”, Pak Armed Forces Med J, vol. 75, no. SUPPL-5, pp. S679-S683, Jul. 2025, doi: 10.51253/pafmj.v75iSUPPL-5.7533.