Antibody titers and immune response to diphtheria-tetanus-pertussis and measles-mumps-rubella vaccination in children treated for acute lymphoblastic leukemia. - Ercan,TE.; Coycan,LY.; Apak,H.; Celkan,T.; Ozkan,A.; Akdenizli,E.; Kasapcopur,O.; Yildiz,I. (J Pediatr Hematol Oncol, 2005)