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Purpose
To evaluate whether T4 + T3 combination therapy had advantages in improving psychological health compared with T4 monotherapy.
Methods
We searched PubMed, Embase, Cochrane Library, and Web of Science from January 2000 to March 2021, and updated in September 2021. The inclusion criteria (prospective study, published in English, had a T4 + T3 combination therapy test group and a T4 monotherapy...