<qa>  What is the main goal of the Internet?The main objective is to provide information on the Internet to help physicians to improve their knowledge on the natural history of thromboembolic disease, particularly in those subgroups of patients who are usually not recruited in randomized clinical trials pregnant women, elderly patients, disseminated cancer, severe renal insufficiency, patients with contraindications to anticoagulation therapy, extreme body weight, etc, with the purpose of decreasing mortality, frequency of thromboembolic recurrences as well as bleeding complications and arterial events. 