1. Chaturvedi N. Ethnicity as an epidemiological determinant—crudely racist or crucially important? Int J Epidemiol2001;30:925–27.
2. Senior PA, Bhopal R. Ethnicity as a variable in epidemiological research. BMJ1994;309:327–30.
3. Entrenz—PubMed. United states national library of medicine; NCBI | NLM | NIH; Department of Health & Human Services; Freedom of Information Act | Disclaimer; http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=&DB=PubMed, (28–29, March, 2002).
4. Bhopal R. Ethnicity and Race as Epidemiological Variables. London: Taylor and Francis, 2001, pp. 21–40.
5. Sheldon TA, Parker H. Race and ethnicity in health research. J Public Health Med1992;14:104–10.