1. Palmer PES, Reeder MM. The imaging of tropical diseases: with epidemiological, pathological, and clinical correlation. 2 revised ed. Berlin: Springer; 2001.
2. WHO: Number of deaths: WORLD by cause; 2015. http://www.who.int/mediacentre/factsheets/fs310/en/ .
3. MRG. European diagnostic imaging system market will grow modestly to almost $2.2 billion in 2017; 2013. https://www.prnewswire.com/newsreleases/european-diagnostic-imaging-system-market-will-grow-modestly-to-almost-22-billion-in-2017-191188891.html.
4. WHO: Global Maps for Diagnostic Imaging; 2014. http://www.who.int/diagnostic_imaging/collaboration/global_collab_maps/en/ .
5. Frost & Sullivan. Brazilian medical imaging market growth driven by socio-economic factors and private investments; 2013. https://www.prnewswire.com/news-releases/european-diagnostic-imaging-system-market-will-grow-modestlyto-almost-22-billion-in-2017-191188891.html.