RT Journal Article SR Electronic T1 Analysis of hepatitis C virus core antigenemia in Saudi drug users JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1645 OP 1646 VO 26 IS 10 A1 Alhusain J. Alzahrani YR 2005 UL http://smj.org.sa/content/26/10/1645.abstract AB