RT Journal Article SR Electronic T1 An atypical tension pneumothorax JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP s52 OP s52 DO 10.7861/clinmed.20-2-s52 VO 20 IS Suppl 2 A1 Shivasankar Murugan Sukumar YR 2020 UL http://www.rcpjournals.org/content/20/Suppl_2/s52.abstract