1. Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
2. WHO Collaborating Centre for Research & Health Promotion on Alcohol and Alcohol-Related Health Problems, Osservatorio Nazionale Alcol, Centro Nazionale di Epidemiologia, Sorveglianza e Promozione della Salute, Istituto Superiore di Sanità, Rome, Italy