1. The role of public health improvements in health advances: The twentieth-century United States
2. WHO. Global Health Observatory
Data Repository, 2015; World Health Organization: Geneva, 2015. https://www.who.int (accessed Jan
8, 2019).
3. World Bank. Global Solar
Atlas, 2015; World Health Organization: Washington, D.C., 2015. https://globalsolaratlas.info (accessed Jan 8, 2019).
4. WHO. Progress on Drinking
Water, Sanitation and Hygiene: 2017; World
Health Organization: Geneva, 2017. https://www.who.int (accessed Jan 8, 2019).