Putu Inten Gayatri, I.A., Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Indonesia, Department of Radiation Oncology, MRCCC Siloam Hospitals, Jakarta, Indonesia; Handika, A.D., Department of Radiation Oncology, Persahabatan General Hospital, Jakarta, Indonesia; Wibowo, W.E., Department of Radiation Oncology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia; Fitriandini, A., Department of Radiation Oncology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia; Fadli, M., Department of Radiation Oncology, MRCCC Siloam Hospitals, Jakarta, Indonesia; Yudi Putranto, A.M., Department of Radiation Oncology, MRCCC Siloam Hospitals, Jakarta, Indonesia; Yudhi Prasada, D.N., Department of Radiation Oncology, MRCCC Siloam Hospitals, Jakarta, Indonesia; Okselia, A., Department of Radiation Oncology, Hasan Sadikin General Hospital, Bandung, Indonesia; Suharsono, Department of Radiotherapy, Dharmais National Cancer Center Hospital, Jakarta, Indonesia; Pawiro, S.A., Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Indonesia