RT Journal Article SR Electronic T1 Hospital emergency codes. An appraisal JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1377 OP 1377 VO 31 IS 12 A1 Khalid M. Al-Aboud A1 Khalid M. Al-Aboud YR 2010 UL http://smj.org.sa/content/31/12/1377.abstract