RT Journal Article SR Electronic T1 Age-adjusted versus cut-off for D-dimer to exclude pulmonary embolism audit JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 32 OP 32 DO 10.7861/clinmed.22-4-s32 VO 22 IS Suppl 4 A1 Tamer Shalaby Boutrus A1 Ibrahim Benshaban A1 Joby Landa A1 Shaheryar Khan A1 Michael Hannides YR 2022 UL http://www.rcpjournals.org/content/22/Suppl_4/32.abstract