Clinical Research Directory

Inclusion Criteria: 1. Have prescription of Rituximab Pfizer or Rituxan within the enrollment period (Index Date: first prescription date within the enrollment period). 2. Have diagnosis of CD20 positive B-cell non- Hodgkin's lymphoma on the index month or within 6 months before index date 3. Have at least 6 months of Look back period and at least one medical record prior to 7 months before the Index date. 4. Have not prescription of Rituximab product before index date(Comparative Analysis Set only). Exclusion Criteria: 1\. Have any diagnosis of other indications of rituximab products other than CD20 positive B-cell non- Hodgkin's lymphoma before index date .