1. 2005 to 2014 CT and MRI Utilization Trends in the Context of a Nondenial Prior Authorization Program. (9th October 2017) Authors: Powell, Adam C.; Levin, David C.; Kren, Erin M.; Beveridge, Roy A.; Long, James W.; Gupta, Amit K. Journal: Health services research and managerial epidemiology Issue: Volume 4(2017) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗