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Khatib, Aisha N; McGuinness, Sarah; Wilder-Smith, Annelies (2021). COVID-19 transmission and the safety of air travel during the pandemic: a scoping review. Current opinion in infectious diseases, 34(5), pp. 415-422. Wolters Kluwer Lippincott Williams & Wilkins 10.1097/QCO.0000000000000771
