RT Journal Article SR Electronic T1 Analysis of documents used in referral system in Wad Medani, Sudan. JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 148 OP 150 VO 26 IS 1 A1 Dafallah, Saad E. A1 Yousif, Eisa M. A1 Idris, Ali A. YR 2005 UL http://smj.org.sa/content/26/1/148.abstract AB