1. Jeannette N, Syndercombe CD (2014) Medical sciences E book, 2nd edn. Elsevier Health Sciences, PublisherSaunders, p 562. Retrieved from https://123library.org/ebook/isbn/9780702052491/
2. NICE (2019) Hypertension in adults: diagnosis and management NG136. National Institute for Health and Care Excellence. Guidance and guidelines. Retrieved from https://www.niceorg.uk/guidance/ng136. Accessed 11 Dec 2019
3. CDC (2015) High blood pressure fact sheet. Centers for Disease Control and Prevention. Retrieved from http://www.cdc.gov/dhdsp/data_statistics/fact_sheets/fs_bloodpressure.htm. Accessed 6 Mar 2016
4. Lackland DT, Weber MA (2015) Global burden of cardiovascular disease and stroke: hypertension at the core. Canad J Cardiol 31(5):569–571. https://doi.org/10.1016/j.cjca.2015.01.009
5. Mendis S, Puska P, Norrving Bo (2011) Global atlas on cardiovascular disease prevention and control. Geneva. World Health Organization in collaboration with the World Heart Federation and the World Stroke Organization. pp 38. Retrieved from https://apps.who.int/iris/handle/10665/44701. Accessed 17 Aug 2014