Referanser
(20) National Institute of Diabetes and Digestive and Kidney Diseases. Constipation. https://www.niddk.nih.gov/health-information/digestive-diseases/constipation [Accessed 19th November 2019]
(21) Bupa. Constipation. https://www.bupa.co.uk/health-information/digestive-gut-health/constipation [Accessed 19th November 2019]
(22) WebMD. Aging and Digestive Health. https://www.webmd.com/digestive-disorders/features/digestive-health-aging#1 [Accessed 19th November 2019]