2507
However, in order to avoid neuropathic side effects, patients under thalidomide therapy should be monitored every 6 months with nerve conduction studies while taking the drug.
 adverse event: under 
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: under 