Sasikumar Sambasivam

radiotherapy cancer carcinoma radiation tumors of head and neck tumors treatment oncology therapy radiation therapy surgery smoking tobacco morbidity worldhealthorganisation stopsmoking world who 31stmay world no tobacco day 3dcrt conformal radiotherapy physics imrt medical devices palliation premanagement nasopharynx medicine malignant salivary parotid gland deprivation androgen locally advanced prostate cystectomy bcg bladder chemotherapy dvh histogram volume dose metastatic cord compression metastases guidelines steroids spine spinalcord bone intraoperative nonepithelial unusual central nervous system children cns presentation brain paediatric