1. Abegunde, D. O. (2007). The burden and costs of chronic diseases in low-income and middle income countries. Lancet, 370(9603), 1929–1938.
2. Arvigo, R., & Balick, M. (1993). Rainforest remedies: One hundred healing herbs of Belize. Lotus Press.
3. Baker, D., Mocek, U., & Garr, C. (2000). Natural products vs. combinatorial: A case study. In S. K. Wrigley, M. A. Hayes, R. Thomas, E. J. T. Chrystal, & N. Nicholson (Eds.), Biodiversity: New leads for pharmaceutical and agrochemical industries (pp. 66–72). The Royal Society of Chemistry.
4. Bérdy, J. (2012). Thoughts and facts about antibiotics: Where we are now and where we are heading. The Journal of Antibiotics, 65, 385–395.
5. Bloom, D. E., Cafiero, E. T., & Jané-Llopis, E. (2011). The global economic burden of noncommunicable diseases. World Economic Forum. http://www.weforum.org/reports/global-economicburden-noncommunicable-diseases