Gastroesophageal reflux among different racial groups in the United States
El-Serag HB, Petersen NJ, Carter J, Graham DY, Richardson P, Genta RM, Rabeneck L. Gastroenterology. 2004; 126(7):1692-9.
Publications
Cross-cultural comparisons of health status in Canada using the Health Utilities Index
Kopec JA, Williams JI, To T, Austin PC. Ethn Health. 2001; 6(1):41-50.
Measuring population health: correlates of the Health Utilities Index among English and French Canadians
Kopec AC, Williams JI, To T, Austin PC. Can J Public Health. 2000; 91(6):465-70.
Utilization of healthcare services by immigrants and other ethnic/cultural groups in Ontario
Wen SW, Goel V, Williams JI. Ethn Health. 1996; 1(1):99-109.