%0 Journal Article %T CD5-negative chronic lymphocytic leukemia/small lymphocytic lymphoma in a patient with gastrointestinal mantle cell lymphoma: an unusual case report %A Dangui Chen %A Fusheng Yao %A Jun Peng %A Yang Zhan %J Archive of "OncoTargets and therapy". %D 2019 %R 10.2147/OTT.S193014 %K Richter¡¯s syndrome %K chronic lymphocytic leukemia/small lymphocytic lymphoma %K mantle cell lymphoma %K hepatitis B virus infection %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6489645/