title: Changing drugs--only when necessary.
mesh_terms: D000380:Agranulocytosis / Q000139:chemically induced*; D013956:Antithyroid Agents / Q000008:administration & dosage* / Q000009:adverse effects*; D001228:Aspergillosis / Q000209:etiology; D002231:Carbimazole / Q000008:administration & dosage* / Q000009:adverse effects*; D006801:Humans; D008172:Lung Diseases, Fungal / Q000209:etiology; D011441:Propylthiouracil / Q000008:administration & dosage*
chemical_list: D013956:Antithyroid Agents; D011441:Propylthiouracil; D002231:Carbimazole