1. Associate Professor, Department of Medicine, McGill University, Montreal, Quebec; Director, Emergency Department, Jewish General Hospital, Montreal, Quebec
2. Clinical Research Associate, Emergency Department—Research Division, Jewish General Hospital, Montreal, Quebec
3. Statistician, Emergency Department—Research Division, Jewish General Hospital, Montreal, Quebec
4. Research Coordinator, Emergency Department—Research Division, Jewish General Hospital, Montreal, Quebec
5. Director, Emergency Department, Centre Hospitalier de L'Université de Montréal, Notre-Dame Hospital, Montreal, Quebec
6. Professor, Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec