RT Journal Article SR Electronic T1 Retroperitoneal hematoma following rofecoxib and enoxaparin coadministration in a patient with atrial fibrillation JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 336 OP 337 VO 26 IS 2 A1 Fahmi Y. Khan A1 Ibrahim F. Hassan A1 Mustafa H. Allity A1 Saifatuallah M. Khan YR 2005 UL http://smj.org.sa/content/26/2/336.abstract AB