1. Eysenbach G Kohler C What is the prevalence of health-related searches on the World Wide Web? Qualitative and quantitative analysis of search engine queries on the internet 2003
2. Clinical practice guidelines for ostomy surgery;Hendren;Dis Colon Rectum,2015
3. https://www.google.ie/search?source=hp&ei=opjHWoT0L8LwgAbQ7JKYAg&q=stoma&oq=stoma&gs_l=psy-ab.3..0l10.987.1527.0.1843.5.5.0.0.0.0.231.756.2j2j1.5.0..2..0…1.1.64.psy-ab..0.5.754…46j0i131k1j0i46k1.0.qZBEsmasC_Y
4. https://trends.google.com/trends/explore?date=all&geo=GB&q=stoma
5. https://trends.google.com/trends/explore?date=today%201-m&geo=GB&q=stoma