title: Letter: Serum calcitonin and thyroid carcinoma.
mesh_terms: D000368:Aged; D002116:Calcitonin / Q000097:blood*; D006801:Humans; D013961:Thyroid Gland / Q000473:pathology; D013964:Thyroid Neoplasms / Q000097:blood* / Q000235:genetics; D013965:Thyroidectomy
chemical_list: D002116:Calcitonin