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

Are we ready to recommend aspirin for cancer prevention?

Lancet. Apr 28, 2012;379(9826):1569-71.
Chan AT, Cook NR.

Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, USA.