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

Echocardiographic detection of left atrial extension of bronchial carcinoma.

JAMA. Mar 10, 1989;261(10):1478-80.
Popovic AD, Harrigan P, Sanfilippo AJ, Weyman AE.

Cardiac Ultrasound Laboratory, Cardiac Unit, Massachusetts General Hospital, Boston 02114.