Penerapan indeks prognostik recursive partitioning analysis, graded prognostic assesment, dan basic score for brain metastases pada pasien tumor metastasis otak pasca radiasi di Departemen Radioterapi RSUPN Dr. Cipto Mangunkusumo tahun 2012-2014 = The application of recursive partitioning analysis graded prognostic assessment and basic score for brain metastases as prognostic indices among patients with brain metastases treated with radiotherapy at Departement of Radiotherapy RSCM 2012 2014