Acknowledgements
The authors would like to thank Mohamed Abdel Aziz (Stop TB Department, WHO, Geneva, Switzerland), Jane Cunningham (UNICEF/UNDP/World Bank/WHO Special Programme for Research and TDR, Geneva, Switzerland), Megan Henry (County of Sacramento Department of Health and Human Services, CA, USA), Philip C Hopewell (University of California, CA, USA), Sundari R Mase (Santa Clara County Public Health Department, CA, USA), Vivienne Ng (Albany Medical College, NY, USA), Mark D Perkins (Foundation for Innovative New Diagnostics, Geneva, Switzerland) and Richard Urbanczik (WHO Tuberculosis Laboratory Consultants Group, Schoemberg, Germany) for their participation in conducting the systematic reviews on microscopy.