RT Journal Article SR Electronic T1 End-tidal carbon dioxide as a screening tool in excluding pulmonary embolism JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 496 OP 497 DO 10.7861/clinmed.Let.22.5.1 VO 22 IS 5 A1 Badie Jacob A1 Imad Riaz A1 Laura Batey A1 Henna Anwar YR 2022 UL http://www.rcpjournals.org/content/22/5/496.abstract