1 McGill International TB Centre, McGill University Health Centre, Montreal, Canada Dept of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada Division of Infectious Disease, Beth Israel Deaconess Medical Centre, Boston, MA, USA claudia.denkinger@mail.mcgill.ca.
2 McGill International TB Centre, McGill University Health Centre, Montreal, Canada Dept of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada.