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Peirce, C., Ippolito, S., Lanas, A. et al. Treatment of refractory and severe hypothyroidism with sublingual levothyroxine in liquid formulation. Endocrine 60, 193–196 (2018). https://doi.org/10.1007/s12020-017-1367-5
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DOI: https://doi.org/10.1007/s12020-017-1367-5