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Four Chinese female patients who suffered from manic-depressive disorder and underlying autoimmune thyroiditis developed transient episodes of thyrotoxicosis during maintenance lithium therapy.
 ( adverse event: during ,  Four Chinese female patients who suffered from manic-depressive disorder and underlying autoimmune thyroiditis: Subject, Four: Subject.Population, Chinese: Subject.Race, female: Subject.Gender, underlying autoimmune thyroiditis: Subject.Disorder, transient episodes of thyrotoxicosis: Effect, maintenance lithium therapy: Treatment, manic-depressive disorder: Treatment.Disorder, lithium: Treatment.Drug) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: during ,  Four Chinese female patients who suffered from manic-depressive disorder and underlying autoimmune thyroiditis: Subject, Four: Subject.Population, Chinese: Subject.Race, female: Subject.Gender, underlying autoimmune thyroiditis: Subject.Disorder, transient episodes of thyrotoxicosis: Effect, maintenance lithium therapy: Treatment, manic-depressive disorder: Treatment.Disorder, lithium: Treatment.Drug) 