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8. Blood Pressure UK. ‘Blood Pressure and You. FAQs’. - http://www.bloodpressureuk.org/BloodPressureandyou/FAQs/Bloodpressurenumbers

9. NICE Clinical Guideline CG107. Hypertension in pregnancy: diagnosis and management. August 2010 https://www.nice.org.uk/guidance/cg107

10. The SPRINT Research Group. ‘A Randomized Trial of Intensive versus Standard Blood-Pressure Control’. N Engl J Med. Nov 26 2015. 373;22: 2103-2116

11. Blood Pressure UK. ‘White coat hypertension (and white coat effect)’. - http://www.bloodpressureuk.org/BloodPressureandyou/Medicaltests/Whitecoateffect

12. S Oparil. ‘The SPRINT trial results’. CardioPulse Articles. European Heart Journal. Published online. March 21 2016. - http://eurheartj.oxfordjournals.org/content/37/12/924

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18. American Heart Association. ‘Choosing a Home Blood Pressure Monitor’. http://www.heart.org/HEARTORG/Conditions/HighBloodPressure/SymptomsDiagnosisMonitoringofHighBloodPressure/Choosing-a-Home-Blood-Pressure-Monitor_UCM_303322_Article.jsp#.V-UW8vkrK70

19. Which? ‘Which? reveals blood pressure monitor Don't Buys Seven Best Buy blood pressure monitors also tested’. January 4 2015. - http://www.which.co.uk/news/2015/01/which-reveals-blood-pressure-monitor-dont-buys-389333/