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 7-2009. A pregnant woman with a large mass in the fetal oral cavity.

N. Engl. J. Med.. Feb 26, 2009;360(9):913-21.
Hartnick CJ, Barth WH, Coté CJ, Albrecht MA, Grant PE, Geyer JT.

Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, USA.