@book {2054, title = {Trends in Hospital Procedures Performed on Black Patients and White Patients: 1980-87}, series = {Provider studies research note / Agency for Health Care Policy and Research:no}, number = {no. 20}, year = {1994}, pages = {207}, publisher = {AHCPR}, organization = {AHCPR}, address = {Rockville}, author = {A. Elixhauser and D. R Harris and R. M Coffey} }