A Study to Evaluate Safety, Efficacy and Pharmacokinetics of Rituximab (MabThera/Rituxan) in Participants With Diffuse Large B Cell Lymphoma (DLBCL) or Follicular Lymphoma (FL)

This single arm, multicenter study will evaluate the safety, efficacy and pharmacokinetic (PK) of subcutaneous (SC) rituximab in previously untreated participants with cluster of differentiation 20 positive (CD20+) DLBCL or FL. In addition to standard chemotherapy, participants will receive at least 4 doses of rituximab 1400 mg SC once a month during the Induction period, and at least 6 doses of rituximab 1400 mg SC once every two months during the Maintenance period.