RT Journal Article SR Electronic T1 Research in brief: Prone positioning in COVID-19: What's the evidence JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 369 OP 369 DO 10.7861/clinmed.rib.20.4.1 VO 20 IS 4 A1 Rajan S Pooni YR 2020 UL http://www.rcpjournals.org/content/20/4/369.abstract AB