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Radiation Oncology/Extrapulmonary high grade neuroendocrine tumors
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Official guidelines
NANETS:
2010: 20664477 Full text -- "The NANETS consensus guidelines for the diagnosis and management of poorly differentiated (high-grade) extrapulmonary neuroendocrine carcinomas." (Strosberg JR, Pancreas. 2010 Aug;39(6):799-800.)