1. World Health Organization, 2018a, Wide differences in antibiotic use between countries, according to new data from WHO. https://www.who.int/medicines/areas/rational_use/oms-amr-amc-report-2016-2018-media-note/en/. Accessed 8 Jun 2019.
2. World Health Organization, 2018b, The top 10 causes of death. https://www.who.int/en/news-room/fact-sheets/detail/the-top-10-causes-of-death. Accessed 30 Jan 2019.
3. Synthesis of Essential Drugs;Vardanyan,2006
4. P.G. Navarro, I.H. Blázquez, B. Quintero Osso, P.J.M. de las Parras, M.I.M. Puentedura, A.A.M. Garcia Int. J. Biol. Macromol. 33 (2003) 159–166.