Patient-physician agreement on tobacco and alcohol consumption: a multilevel analysis of GPs' characteristics. Thebault, J. L.; Falcoff, H.; Favre, M.; Noel, F.; Rigal, L.. BMC Health Serv Res. 2015; 110: p.110. doi:10.1186/s12913-015-0767-6 10.1186/s12913-015-0767-6 [pii]Article