Hanson, C William III MD; Marshall, Bryan E MD, FRCP; Frasch, H Frederick PhD; Marshall, Carol PhD
From the Center for Anesthesia Research, Department of Anesthesia, Hospital of the University of Pennsylvania, Philadelphia, PA.
This study was supported, in part, by grants GM29628 and GM07612 from the National Institutes of Health.
Address requests for reprints to: C. William Hanson III, MD, Center for Anesthesia Research, Department of Anesthesia, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104.