Atrial Fibrillation (AF) is the most common cardiac arrhythmia and the main cause of cardioembolic stroke. Oral Anticoagulation (OAC) has been shown to significantly prevent AF-related thromboembolism, however, despite convincing evidences and current guidelines recommendations, OAC tends to be underused in clinical practice especially in the oldest. Education and training to appropriately select people suitable for OAC for stroke prevention could be pivotal in the decision making process. According to the study project, physicians working in Internal Medicine and Geriatric wards, where are mainly admitted elderly people with AF, will undergo to a program of e-learning through computer-based simulation method reproducing clinical scenarios of patients aged 65 years or older, with known or newly diagnosed AF, admitted to hospital for any medical reason and requesting that a decision about long-term antithrombotic therapy is taken.