| Supported by Immunex, a wholly owned subsidiary of Amgen, and by Wyeth Pharmaceuticals. Financial support for the preparation of the manuscript was provided by Amgen.
| Dr Paller is an investigator for Amgen and serves as a consultant for and receives honoraria from Centocor and Abbott Laboratories. Dr Eichenfield is an investigator and past consultant for Amgen and is a consultant and receives an honorarium from Centocor. Dr Langley is on the scientific advisory boards of Amgen, Wyeth, Centocor, Serono, and Abbott Laboratories; serves on the speakers’ bureaus for Amgen, Wyeth, Abbott Laboratories, Serono, and Biogen Idec; receives research support from Amgen, Wyeth, Centocor, Serono, and Abbott Laboratories; and receives other grant support from Abbott Laboratories, Amgen, Biogen Idec, Boehringer Ingelheim, Centocor, Celgene, Isotechnika, and Serono. Dr Leonardi is a consultant for Amgen, Abbott, Centocor, and Genentech; serves as an investigator for Amgen, Abbott, Allergan, Altana, Alza, Astellas, Celgene, Centocor, Genentech, Bristol Myers, Eli Lilly, Galderma, Genyme, Pfizer, Incyte, CombinatoRx, 3M Pharmaceuticals, Perrigo Israel Pharmaceutical, ScheringPlough, RTL, Novartis, Vitac, and Wyeth; and serves on the speakers’ bureau for Amgen, Abbott, Centocor, Genentech, and Warner Chilcott. Dr Siegfried is a consultant and investigator for Amgen, an investigator for Leo, and a consultant for Abbott Laboratories. Ms Creamer and Dr Kricorian are Amgen employees and receive stock or stock options from Amgen.