1. Influence of a highly purified senna extract on colonic epithelium;van Gorkom;Digestion,2000
2. Melanosis coli: a rarity in digestive endoscopy;Mellouki;Pan Afr Med J,2013
3. Images in clinical medicine. Melanosis coli;Ahmed;N Engl J Med,2003
4. [One hundred books which built up neurology (35) – Cruveilhier J “Anatomie Pathologique du Corps Humain” (1829–1842)];Sakuta;Brain Nerve,2009
5. Pseudo-obstruction with pitch black colon – a very rare presentation of melanosis coli;Malik;Ulster Med J,2008