Multicenter Study

The obesity paradox: body mass index and outcomes in patients undergoing nonbariatric general surgery.

Ann. Surg. 2009 Jul 1;250(1):166-72.
Multicenter Study

Obesity is associated with increased morbidity but not mortality in critically ill patients.

Intensive Care Med. 2008 Nov 1;34(11):1999-2009.
Multicenter Study

The influence of body mass index obesity status on vascular surgery 30-day morbidity and mortality.

J. Vasc. Surg. 2009 Jan 1;49(1):140-7, 147.e1; discussion 147.