@book{N-3369-HHS,
author="Brook, Robert H. and Kathleen N. Lohr and Mark R. Chassin and Jacqueline Kosecoff and Arlene Fink and David Solomon",
title="Geographic Variations in the Use of Services: Do They Have Any Clinical Significance?",
address="Santa Monica, CA",
year="1991",
doi="",
publisher="RAND Corporation"
}