2020 Reporting of race and ethnicity at an international haematology conference. Ansh Mehta, Nathanael Fillmore, Saurabh Dahiya, Anita D'Souza, John Sweetenham, Ankit Kansagra British Journal of Haematology191(5), e107-e109 Health Disparities Race and Ethnicity Clinical Trial Enrollment Hematology Logistic Regression