1. College of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia
2. Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia
3. Torres and Cape Tuberculosis Control Unit, Thursday Island, QLD 4875, Australia
4. WHO Collaborating Centre in Tuberculosis, Sydney Infectious Diseases Institute (Sydney ID), The University of Sydney, Westmead, NSW 2145, Australia