Rahul George, Vijy Paul Thomas, Shalini Miriam Ipe and Joicy Els Jojo 2022. Pneumothorax in Patients with Moderate to Severe Covid-19 Infection:A Retrospective Observational Study. Surgical Review: International Journal of Surgery, Trauma and Orthopedics. 8, 1 (Mar. 2022), 12-23.