Abstract and the text. The abstract should contain the following sections: Objective (reflects the question), Data Summary (synopsis of data), Conclusion (therapeutic recommendation). The text should include: question, background, literature review/trial description/trial analysis, conclusion/summary, and references. The abstract can be up to 200 words and the text 350 words The qustion: Can levetiracetam used to prevent migraine? yes it can be used. justify?