1937
Destructive thyrotoxicosis appeared 4-6 months after starting IFN-alpha, followed by Graves' hyperthyroidism within 8 to 11 months.
 adverse event: after 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: after 