Mangel AW, Fehnel SE. End points in irritable bowel syndrome. Expert Rev Gastroenterol Hepatol. 2011 Jun 1;5(3):293-5.
Beach RH, Poulos C, Pattanayak SK. Farm economics of bird flu. Revue Canadienne D'agroeconomie. 2007 Dec 1;55(4):471-83.
Clarkson TB, Anthony MS, Klein KP. Phytoestrogens: can hormone replacement be something you eat? Women's health digest. 1996;1(4):253-5.