1. World Health Organization. https://www.who.int/publications/i/item/9789240015791 (2020).
2. World Health Organization. https://apps.who.int/iris/handle/10665/67816 (2000).
3. United Nations. https://www.un.org/millenniumgoals/ (2015).
4. The Global Fund. https://www.theglobalfund.org/en/overview/ (2019).
5. PMI. https://www.pmi.gov/about (2015).