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 Level 4
 
 H - Systemic hormonal preparations, excluding sex hormones and insulinsH03 - Thyroid therapyH03B - Antithyroid preparationsH03BB - Sulfur-containing imidazole derivatives
 
 H03BB01 - CarbimazoleH03BB02 - ThiamazoleH03BB52 - Thiamazole, combinations
 
 
 
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