1. Division of Primary CareUniversity of Nottingham Nottingham UK
2. Division of Epidemiology and Public HealthUniversity of Nottingham Nottingham UK
3. Département de pharmacologieHôpital Pitié‐Salpêtrière Paris France
4. Centre Universitaire de Médecine Générale et Santé publique, Centre Hospitalier Universitaire Vaudois Lausanne Switzerland
5. CESP‐INSERM U1018 Paris France