Fehnel S, Fiedorek FT, Nelson L, DiBenedetti D, Spence S, Carson RT. Development and psychometric evaluation of the Diabetic Gastroparesis Symptom Severity Diary. Clin Exp Gastroenterol. 2019 Feb 22;12:93-103. doi: 10.2147/CEG.S184016
Nelson LM, Williams VS, Fehnel SE, Carson RT, MacDougall J, Baird MJ, Tourkodimitris S, Kurtz CB, Johnston JM. Psychometric validation of patient-reported outcome measures assessing chronic constipation. Clin Exp Gastroenterol. 2014 Sep 26;7:385-94.
Williams VS, Nelson LM, Fehnel SE, MacDougall J, Carson RT, Tourkodimitris S, Kurtz C, Baird MJ, Johnston JM. Psychometric validation of symptom severity measures in irritable bowel syndrome with constipation. Aliment Pharmacol Ther. 2014 Aug;40(3):298-308. doi: 10.1111/apt.12830
Ervin CM, Fehnel SE, Baird MJ, Carson RT, Johnston JM, Shiff SJ, Kurtz CB, Mangel AW. Assessment of treatment response in chronic constipation clinical trials. Clin Exp Gastroenterol. 2014 Jun 3;7:191-8. doi: 10.2147/CEG.S58321. eCollection 2014
Cook SF, Lanza L, Zhou X, Sweeney CT, Goss D, Hollis K, Mangel AW, Fehnel SE. Gastrointestinal side effects in chronic opioid users: results from a population-based survey. Aliment Pharmacol Ther. 2008 Jun 15;27(12):1224-32.
Mangel AW, Fehnel SE. Global endpoints in functional gastrointestinal disease. Aliment Pharmacol Ther. 2005 Dec 1;22(11-12):1162-3.