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

Case records of the Massachusetts General Hospital. Case 6-2010. A 37-year-old man with a lesion on the tongue.

N. Engl. J. Med.. Feb 25, 2010;362(8):740-8.
Flynn TR, Hunter GJ, Johnson MM.

Department of Oral and Maxillofacial Surgery, Harvard School of Dental Medicine, USA.