1. Information about Tuberculosis, TB Statistics.
http://www.tbfacts.org/tb-statistics
2. World Health Organization, Global tuberculosis report 2015, 20th ed.
3. Centers for Disease Control and Prevention.
https://www.cdc.gov/features/tbsymptoms
4. A. Ayub, S.H. Yale, K. D. Reed, et al., “Testing for latent tuberculosis,” Clin. Med. Res. (CMR), 2 (3), 191–194 (2004).
5. Information about Tuberculosis, TB Tests.
http://www.tbfacts.org/tb-tests