Gnanasakthy A, DeMuro-Mercon CJ. Logistical considerations for intergrating patient-reported outcomes in multiregional clinical trials. Clinical Researcher. 2015 Apr;45-8.
Mangel AW, Fehnel SE. End points in irritable bowel syndrome. Expert Rev Gastroenterol Hepatol. 2011 Jun 1;5(3):293-5.