RT Journal Article SR Electronic T1 Fludarabine as a second-line treatment of advanced stage chronic lymphocytic leukemia JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 2054 OP 2056 VO 25 IS 12 A1 Ayyildiz, Orhan A1 Isikdogan, Abdurrahman A1 Bolaman, Zahit A1 Muftuoglu, Ekrem YR 2004 UL http://smj.org.sa/content/25/12/2054.abstract AB