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Joël Coste, Xavier Bertagna, and Mahmoud Zureik have no conflicts of interest that are directly relevant to the content of this letter.
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Coste, J., Bertagna, X. & Zureik, M. Comment on: “Levothyrox® New and Old Formulations: Are they Switchable for Millions of Patients?”. Clin Pharmacokinet 58, 965–966 (2019). https://doi.org/10.1007/s40262-019-00779-9
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DOI: https://doi.org/10.1007/s40262-019-00779-9