Myelosuppression Adult

The goal of this clinical trial is to Primary Objectives: 1. To compare the incidence of febrile neutropenia in patients with non-Hodgkin's lymphoma who received early or late granulocyte colony-stimulating factor (G-CSF) during standard chemotherapy in a multicenter study 2. To determine the incidence of leukopenia and neutropenia in patients with non-Hodgkin's lymphoma who received early or late G-CSF during standard chemotherapy in a multicenter study Secondary Objectives: 1. To determine changes in white blood cell, hemoglobin, and platelet levels in patients with non-Hodgkin's lymphoma who received early or late G-CSF during standard chemotherapy. 2. To determine the quality of life of patients with non-Hodgkin's lymphoma who undergoing standard chemotherapy and with neutropenia Researchers will compare the outcome between patients received either early G-CSF (within 72 hours) or late G-CSF (after 72 hours). All patients will be followed up to monitor for febrile neutropenia events, other hematological parameters and quality of life.