1996
Serum sickness consists of a systemic reaction resulting from the formation of soluble circulating immunocomplexes after the introduction of a foreign substance into the body We studied a 38-year-old woman diagnosed with anxiety, depression and right sacroileitis who was treated with phenylbutazone, ranitidine, clomipramine and levomepromazine.
 potential therapeutic event: treated 
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:
 potential therapeutic event: treated 