1. National Brain Tumor Society. Brain tumor information. (2021). Accessed: February 2021: https://braintumor.org/brain-tumor-information.
2. Cancer.Net.. Brain tumor: types of treatment. (2021). Accessed: February 2021: https://www.cancer.net/cancer-types/brain-tumor/types-treatment.
3. Cleveland Clinic. Brain & spine tumors. (2021). Accessed: March 2021: https://my.clevelandclinic.org/treatment-guides/18-0062-brain-tumor-general-guide.
4. American Association of Neurological Surgeons (AANS). Brain tumors. (2021). Accessed: February 2021: https://www.aans.org/en/Patients/Neurosurgical-Conditions-and-Treatments/Brain-Tumors.
5. A simplified overview of World Health Organization classification update of central nervous system tumors 2016;Gupta A;J Neurosci Rural Pract,2017