S. Durmaz, E. F. Kucuk, S. Simsek, K. Durgun, E. B. Karakas, and R. Durusoy, “Outcomes of COVID-19 contact tracing in hospital healthcare workers: a retrospective cohort study”, J Pak Med Assoc, vol. 72, no. 4, pp. 707–713, Apr. 2022.