Emily MacLean1,2, Madhukar Pai3,2,4. 1. Department of Epidemiology & Biostatistics, McGill University, Montreal, Canada. 2. McGill International TB Centre, McGill University, Montreal, Canada. 3. Department of Epidemiology & Biostatistics, McGill University, Montreal, Canada; madhukar.pai@mcgill.ca. 4. Manipal McGill Centre for Infectious Diseases, Manipal Academy of Higher Education, Manipal, India.