Affiliation: | (1) Roche Research Center, Hoffmann-La Roche Inc., Nutley, New Jersey, 07110, U.S.A.;(2) Pfizer Inc., 2800 Plymouth Road, Ann Arbor, MI, 48105, U.S.A.;(3) Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, NJ, 07033, U.S.A. |