Affiliation: | 1. Department of Chemistry, Medicinal Chemistry, University of Gothenburg, 41296 G?teborg (Sweden);2. Department of Cell and Molecular Biology, Present address: Department of Biomedicine, University of Gothenburg, 41346 G?teborg (Sweden);3. Neurosearch Sweden AB, Arvid Wallgrens Backe 20, 41346 G?teborg (Sweden), Fax: (+46)?31‐7720601 |