Liu SY, Trope GE, Buys YM, El-Defrawy SR, Khan AM, Jin YP. Visual impairment and the Ontario disability support program. Can J Ophthalmol. 2020 Jun;55(3):212-20. doi: 10.1016/j.jcjo.2019.12.009
Mangel AW, Fehnel SE. End points in irritable bowel syndrome. Expert Rev Gastroenterol Hepatol. 2011 Jun 1;5(3):293-5.
Watts (Wideman) K, McAvinchey G, Quiroz R. Language services in survey research. ATA Chronicle. 2002 Jul;31(7):36-7.