This will be a prospective single blind study (blinded evaluator). Patients will be randomly assigned in two groups. The first group will have a one-day therapeutic education program followed by a 5-minutes phone call every week for 3 months. The second group will have the same one-day therapeutic education program that will be followed by an unique one-hour phone call. During the one-day therapeutic education program and the phone calls, hygienic rules (ie physical activities) and dietetic regimen advices will be given to patients. Evaluation will be done at 3 months.