1 Institute of Clinical Medicine, University of Aarhus, Aarhus 8000, Denmark; The Royal Hospital, Muscat, Oman. Electronic address: eskild.petersen@gmail.com.
2 International Union Against TB and Lung Diseases, Paris, France; Department of Medicine, Kenyatta University, Nairobi, Kenya.
3 Al Rahma Tuberculosis Hospital, Muscat, Oman.
4 National Institute for Infectious Diseases, Lazzaro Spallanzani, Rome, Italy.
5 Division of Infection and Immunity, Centre for Clinical Microbiology, University College London, London, UK; National Institute of Health Research Biomedical, Research Centre at UCL Hospitals, London, UK.