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

Chronic critical illness.

N. Engl. J. Med.. Jan 09, 2014;370(2):175-7.
Lamas D.

From the Departments of Pulmonary and Critical Care Medicine at Brigham and Women's Hospital, Beth Israel Deaconess Medical Center, and Massachusetts General Hospital - all in Boston.