1. Medicinal Chemistry, GlaxoSmithKline, Severo Ochoa, 2 P.T.M. Tres Cantos, Madrid 28760, Spain
2. Chemical Development, GlaxoSmithKline, Gunnels Wood Road, Stevenage SG1 2NY, U.K.
3. Medicinal Chemistry, GlaxoSmithKline, Gunnels Wood Road, Stevenage SG1 2NY, U.K.