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

Expansion and contraction: treating diabetes with bariatric surgery.

Nat. Med.. 6 6, 2009;15(6):616-7.
Goldfine AB, Shoelson SE, Aguirre V.

Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA.