Effect of previous administration of potassium iodine and different durations of low iodine diets for radioiodine therapy on the treatment of Graves' disease in iodine-rich areas.

"Declarations Competing interestsThe authors have no relevant financial or non-financial interests to disclose. Code availabilityNot applicable. Ethics approvalThis retrospective study was approved by the local ethics committees of Nagoya University Hospital (Nagoya, Japan) (2020–0052) and Hokko Memorial Hospital (Sapporo, Japan) (I-03) and was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. Consent to participateAll patients provided written informed consent to undergo RAI and associated procedures, including adherence to the LID. Consent for publicationNot applicable. Competing interests The authors have no relevant financial or non-financial interests to disclose."

"Funding The authors received no funding for this study."