1 Division of Pulmonary and Critical Care Medicine, San Francisco, CA, USA; University of California, San Francisco, CA, USA.
2 Division of HIV, Infectious Diseases and Global Medicine, San Francisco, CA, USA.
3 Division of HIV, Infectious Diseases and Global Medicine, San Francisco, CA, USA; United Nations Special Envoy for Tuberculosis, Global Health Delivery & Diplomacy, Institute for Global Health Sciences, UCSF, San Francisco, CA 94158, USA. Electronic address: David.mckey@ucsf.edu.