“…3,[5][6][7] These reports follow a systematic process in which a clinically relevant issue and multidisciplinary task force are chosen, as well as a clinically relevant question including the patient population (for example: adults, children, newly diagnosed epilepsy), type of study (prognostic factor, treatment, new antiepileptic drugs), and the course of the clinical parameter evaluated (efficacy, tolerability). In the bibliographic search, the articles are classified by 2 independent reviewers into level I (prospective, randomized, controlled clinical trials), corresponding to the most complete evidence for treatment recommendations and which are used, when available, to support the conclusions of the clinical guideline, and levels II through IV, which include other clinical trials, cohort studies, case series, or isolated case reports, providing weaker recommendations to be used when no level I studies are available.…”