2598
The authors report a longitudinal case study of a woman with a history of bipolar affective disorder in which L-dopa shortened the manic-depressive cycle length when administered in a double-blind trial.
 adverse event: shortened 
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: shortened 