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.
Skinner CS, Schildkraut JM, Calingaert B, Hoyo C, Crankshaw SS, Fish L, Susswein L, Jasper C, Reid L. Factors associated with African Americans' enrollment in a national cancer genetics registry. Community Genet. 2008 Apr 1;11(4):224-33.