Octavianus, S.; Handoko, H.; Permata, T. B. M.; Purwoto, G.; Adham, M.; Panigoro, S. S.; Setiati, S.; Gondhowiardjo, S. Characteristics and Assessment of Frailty As Risk Factor of Therapy-Related Acute Toxicities and Delayed Overall Treatment Time in Elderly Patients Treating With External Beam Radiation Therapy at Indonesia Top Referral Hospital. Open Access Maced J Med Sci 2022, 10, 1806-1812.