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To err on the side of transparency, Andreas Machens and Henning Dralle wish to disclose that they served as unpaid members on the American Thyroid Association Guidelines Task Force on Medullary Thyroid Carcinoma which wrote and authored the 2015 Revised American Thyroid Association Guidelines for the Management of Medullary Thyroid Carcinoma (reference #5). The authors declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"Informed consent was obtained from each patient and\/or legal guardian as applicable before each <i>RET<\/i> gene test and each operation, all of which represented standard of care.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}}]}}