RAHUL GEORGE; VIJY PAUL THOMAS; SHALINI MIRIAM IPE; JOICY ELS JOJO. Pneumothorax in Patients with Moderate to Severe Covid-19 Infection:A Retrospective Observational Study. Surgical Review: International Journal of Surgery, Trauma and Orthopedics, v. 8, n. 1, p. 12-23, 26 Mar. 2022.