Kajian farmakoekonomi kemoterapi rejimen berbasis platinum dengan dua jenis obat (platinum-based doublet) pada pasien adenokarsinoma paru mutasi epidermal growth factor receptor negatif di RS Persahabatan = Pharmacoeconomic study of platinum-based doublet chemotherapy regimens in patients with lung adenocarcinoma negative epidermal growth factor receptor mutations at Persahabatan Hospital