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

Clinical problem-solving. The search is on.

N. Engl. J. Med.. Feb 07, 2013;368(6):562-7.
Perencevich M, Saltzman JR, Levy BD, Loscalzo J.

Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.