MAP20090044319 Eggleston, Karen Measuring selection incentives in managed care : evidence from the Massachusets state employee insurance program / Karen Eggleston, Anupa Bir En: The Journal of risk and insurance. - Nueva York : The American Risk and Insurance Association, 1964- = ISSN 0022-4367. - 01/03/2009 Tomo 76 Número 1 - 2009