CLINICAL & BASIC RESEARCH SQU Med J, August 2011, Vol. 11, Iss. 3, pp. 383-390, Epub. 15th Aug 11 Submitted 24th Apr 11 Revision ReQ. 24th May 11 Revision recd. 1st Jun 11 Accepted 8th Jun 11 Department of Human & Clinical Anatomy, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman. *Corresponding Author email: ibrahim1@squ.edu.om <‹ÈÈœj÷<∞jœËÜõ<‡⁄< �g�÷]