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. 2023 Aug 29;15(17):4321. doi: 10.3390/cancers15174321

Figure 1.

Figure 1

Flow diagram depicting the article identification protocol. a Initial search criteria in PubMed, as of 26 November 2022: (((radiotherapy) OR (radiation therapy)) AND (head and neck)) AND ((thyroid) OR (hypothyroidism) OR (thyroid toxicity) OR (thyroid dysfunction)); b Article evaluation criteria: must be original research article describing incidence, mechanism, dosimetry, treatment, or prevention of radiation-related hypothyroidism for adults receiving RT for the treatment of head and neck cancers. c Evaluated and included non-duplicate entries from the 500 hits from the Google Scholar query “hypothyroidism after radiation therapy”.