1. Cancer Research UK . Bowel cancer survival statistics - by stage, 2018. Available: https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/bowel-cancer/survival#heading-Three [Accessed August 8, 2020].
2. Cancer Research UK . Oesophageal cancer statistics. oesophageal cancer survival, 2017. Available: https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/oesophageal-cancer#heading-Two [Accessed August 20, 2020].
3. The two week referral for colorectal cancer: a retrospective analysis
4. The changing profile of esophageal cancer presentation and its implication for diagnosis;Gibbs;J Natl Med Assoc,2007
5. Public Health England . National cancer intelligence network: routes to diagnosis 2015. Available: http://www.ncin.org.uk/publications/routes_to_diagnosis [Accessed January 17, 2017].