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

Tobacco use among homeless people--addressing the neglected addiction.

N. Engl. J. Med.. Jul 18, 2013;369(3):201-4.
Baggett TP, Tobey ML, Rigotti NA.

Tobacco Research and Treatment Center, General Medicine Division, Massachusetts General Hospital, Boston, USA.