RT Journal Article SR Electronic T1 Warfarin resistance in a patient with mechanical valve prosthesis JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 332 OP 333 VO 26 IS 2 A1 Abdel-Razeq, Hikmat N. A1 Bajouda, Ali A. A1 Khalil, Manar M. A1 Chamsi-Pasha, Hassan YR 2005 UL http://smj.org.sa/content/26/2/332.abstract AB