From the University of Pennsylvania and VA Medical Center, Philadelphia, Pennsylvania.

H. Ralph Schumacher, MD, has been a consultant to Ipsen, Pfizer Inc, Regeneron Pharmaceuticals, Inc., Savient Pharmaceuticals, Inc., TAP Pharmaceutical Products Inc., and Xoma. He has received honoraria from Regeneron Pharmaceuticals, Inc., Savient Pharmaceuticals, Inc., and TAP Pharmaceutical Products Inc., and received grants from Merck & Co., Inc., TAP Pharmaceutical Products Inc., and received grants from Merck & Co., Inc., TAP Pharmaceutical Products Inc., and Wyeth.

Lan X. Chen, MD, PhD, received a research grant from TAP Pharmaceutical Products Inc.

Reprints: H. Ralph Schumacher, MD, University of Pennsylvania, VA Medical Center, 151 K University and Woodland Aves., Philadelphia, PA 19104. E-mail: [email protected].