[1] FONCSI, Publ Fdn Ind Safety Culture, 6 Allee Emile Monso, F-31000 Toulouse, France
[2] Hosp Federat Vaud, Qual & Patient Safety Improvement Program, CH-1008 Prilly, Switzerland
[3] Univ Lyon 3, IFROSS Inst, 18 Rue Chevreul, F-69007 Lyon, France
[4] Univ Oxford, Expt Psychol, Radcliffe Observ Quarter, Anna Watts Bldg,Woodstock Rd, Oxford OX2 6GG, Oxfordshire, England