Affiliation: | (1) Pain Department, Neurology Centre of Excellence for Drug Discovery, GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex, CM19 5AW, UK;(2) Metabolic Profiling Group, Investigative Preclinical Toxicology, Safety Assessment, GlaxoSmithKline, Park Road, Ware, Hertfordshire, SG12 0DP, UK |