Martin S, Shah SN, Hepp Z, Harris N, Morgans AK. Qualitative analysis of pain in patients with locally advanced or metastatic urothelial carcinoma. Bladder Cancer. 2022 Mar 11;8(1):45-53. doi: 10.3233/BLC-211518
Mangel AW, Wang J, Sherrill B, Gnanasakthy A, Ervin C, Fehnel SE. Urgency as an endpoint in irritable bowel syndrome. Gastroenterology Research. 2011 Feb 1;4(1):9-12.