RT Journal Article SR Electronic T1 HBeAg negativity is not equal to the presence of pre core mutations in chronic hepatitis B patients. JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1206 OP 1207 VO 32 IS 11 A1 Jazayeri, Seyed M. A1 Alavian, Seyed M. YR 2011 UL http://smj.org.sa/content/32/11/1206.abstract AB