2003
race and ethnic background have been used as cause for discrimination, prejudice, marginalization, and even subjugation. Excessive focus on racial or ethnic differences runs the risk of undervaluing the great diversity that exists among persons within groups. However, this risk needs to be weighed against the fact that in epidemiologic and clinical research, racial and ethnic categories are useful for generating and exploring hypotheses about environmental and genetic risk factors, as well as interactions between risk factors, for important medical outcomes. Erecting barriers to the collection of information such as race and ethnic background may provide protection against the aforementioned risks; however, it will simultaneously retard progress in biomedical research and limit the effectiveness of clinical decision making.
Esteban González Burchard et al.: The importance of race and ethnic background in biomedical research and clinical practice, in: The New England Journal of Medicine 348 (12) (2203), S.1170-1175, hier S. 1171.

2012
The concept of diversity aims at improving the quality of care for all patients and thus at enhancing health equity. Hence, diversity has to be addressed institutionally at many different levels—in higher education, faculty and staff development and in patient education. A commitment to diversity creates a climate of inclusion among health care providers and patients. […]
Diversity is a fact and it can no longer be considered a deviation of ‘normality’. It should therefore be a core concern for all the health practitioners and a central focus in any health institution. If quality of care and health equity are to be enhanced, health institutions must be able to respond adequately to patient diversity and to language and cultural barriers in access to health.
Ruth Kutalek: Diversity competence in medicine: equity, culture and practice, in: Wiener Klinische Wochenschrift 124 (Suppl. 3) (2012), S. 3-9, hier S. 4; 7.

2019
In seiner grundlegenden Form konzentriert sich Diversität auf den gleichberechtigten Zugang zur Gesundheitsversorgung für alle, die sie brauchen
Florian Steger: Einleitung, in: ders. (Hg.): Diversität im Gesundheitswesen, Freiburg im Breisgau 2019, S. 11-25, hier S. 12.