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3. NHS Choices. 'Why lack of sleep is bad for your health'. June 15 2015 - https://www.nhs.uk/Livewell/tiredness-and-fatigue/Pages/lack-of-sleep-health-risks.aspx

4. British Lung Foundation. 'The burden and impact of OSA'. - https://www.blf.org.uk/sites/default/files/OSA-Next-Steps-Report-infographic.pdf

5. AV Nedeltcheva and FAJL Scheer. 'Metabolic effects of sleep disruption, links to obesity and diabetes'. Current Opinion in Endocrinology, Diabetes and Obesity. August 2014. 21; 4:293€“298. - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4370346/

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7. NHS Choices. 'How much sleep do children need?'. October 31 2017. - https://www.nhs.uk/Livewell/Childrenssleep/Pages/howmuchsleep.aspx

8. National Sleep Foundation. 'National Sleep Foundation recommends new sleep times'. February 2 2015. - https://sleepfoundation.org/press-release/national-sleep-foundation-recommends-new-sleep-times

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10. NHS Choices. '10 medical reasons for feeling tired'. February 21 2015. - www.nhs.uk/Livewell/tiredness-and-fatigue/Pages/medical-causes-of-tiredness.aspx

11. Diabetes UK. 'What are the signs and symptoms of diabetes?'. - https://www.diabetes.org.uk/diabetes-the-basics/diabetes-symptoms

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13. Harvard Health Publishing. Harvard Women's Health Watch. 'Medications that can affect sleep'. July 2010. - https://www.health.harvard.edu/newsletter_article/medications-that-can-affect-sleep

14. NHS Choices. Obstructive sleep apnoea. July 14 2016. - https://www.nhs.uk/conditions/obstructive-sleep-apnoea/

15. JM Shneerson. 'Central Sleep Apnoeas'. British Snoring & Sleep Apnoea Association. - http://www.britishsnoring.co.uk/central_sleep_apnoeas.php

16. The Sleep Apnoea Trust Association. Treatment of Sleep Apnoea. - http://www.sleep-apnoea-trust.org/sleep-apnoea-information-patients/treatment-sleep-apnoea/

17. D Riemann et al. 'European guideline for the diagnosis and treatment of insomnia'. Journal of Sleep research. December 2017. 26; 6: 675€“700 http://onlinelibrary.wiley.com/doi/10.1111/jsr.12594/full

18. M Calem et al. 'Increased Prevalence of Insomnia and Changes in Hypnotics Use in England over 15 Years: Analysis of the 1993, 2000, and 2007 National Psychiatric Morbidity Surveys'. Sleep. March 1 2012. 35; 3: 377€“384. - https://academic.oup.com/sleep/article/35/3/377/2558875

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21. NHS Choices. Online mental health services. Sleepio. April 30 2015. - https://www.nhs.uk/Conditions/online-mental-health-services/Pages/sleepio.aspx

22. NICE. Health app: Sleepio for adults with poor sleep. Medtech innovation briefing [MIB129]. Published November 2017. - https://www.nice.org.uk/advice/mib129/chapter/Summary

23. NHS. 'Find digital tools to help you manage and improve your health'. - https://apps.beta.nhs.uk/)

24. National Sleep Foundation. 'Orexin receptor antagonists: a new class of sleeping pill'. https://sleepfoundation.org/sleep-news/orexin-receptor-antagonists-new-class-sleeping-pill

25. Specialist Pharmacy Service. Medicines Articles. Suvorexant. Published January 4 2016, updated December 11 2017. - https://www.sps.nhs.uk/medicines/suvorexant/