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Conflict of interest
Yang Yu and Marc Maliepaard declare that they have no potential conflicts of interest that might be relevant to the contents of this manuscript.
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Yu, Y., Maliepaard, M. Comment on “Levothyrox® New and Old Formulations: Are they Switchable for Millions of Patients?”. Clin Pharmacokinet 59, 281–282 (2020). https://doi.org/10.1007/s40262-019-00850-5