Paper Chase is a research database designed to offer abstracts of research articles published in journals that have a highly rated impact factor as determined by ISI Impact Factor and PageRank. Abstracts are organized by date, with the most recently published papers listed first. 

Paper Chase

Beyond ACOs and bundled payments: Medicare's shift toward accountability in fee-for-service.

JAMA. Feb 19, 2014;311(7):673-4.
Chen C, Ackerly DC.

Massachusetts General Hospital, Boston.