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

Observation care--high-value care or a cost-shifting loophole?

N. Engl. J. Med.. Jul 25, 2013;369(4):302-5.
Baugh CW, Schuur JD.

Department of Emergency Medicine, Brigham and Women's Hospital, Boston, USA.