RT Journal Article SR Electronic T1 Prevalence of hepatitis B virus and hepatitis C virus in health workers in 3 major hospitals in Aden, Republic of Yemen JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1031 OP 1032 VO 24 IS 9 A1 Ahmed S. Al-Jarba A1 Waleed M. Al-Sayyari YR 2003 UL http://smj.org.sa/content/24/9/1031.abstract AB