1. Research Group of Medical Informatics, University Pompeu Fabra, Barcelona, Spain
2. Department of Pharmacology, University of Santiago de Compostela, Santiago de Compostela, Spain
3. Pharmaceutical Group of the European Union, Brussels, Belgium
4. Association of the European Self-Medication Industry, Brussels, Belgium
5. Association of the European Self-Medication Industry, Brussels, Belgium. JOSÉ LUIS FERNANDEZ is Technical Staff Member, SEMA Group S.A., Madrid, Spain.