Evaluasi penggunaan antibiotika empirik pada penanganan demam Neutropenia terhadap pasien leukemia akut dewasa setelah menerima kemoterapi agresif di ruang isolasi imunitas menurun RS Kanker Dharmais Jakarta = Evaluation of empirical antibiotics use in treatment of febrile neutropenia to adult patients with acute leukemia after receiving aggressive chemotherapy in the declines immunity isolation room at Dharmais Cancer Hospital Jakarta