RT Journal Article SR Electronic T1 Sensitivity of in-house polymerase chain reaction for detecting hepatitis B-DNA in HbsAg positive sera JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 619 OP 620 VO 29 IS 4 A1 Aqel, Amin A. YR 2008 UL http://smj.org.sa/content/29/4/619.abstract