Institution: | (1) Institute for Medical Microbiology, University of Basel, Petersplatz 10, CH-4003 Basel, Switzerland e-mail: BIENZ@ubaclu.unibas.ch Tel.: +41-61-267-3290, Fax: +41-61-267-3298, CH;(2) Department of Anatomy, University of Basel, Pestalozzistrasse 20, CH-4056 Basel, Switzerland Tel.: +41-61-267-3920, Fax: +41-61-267-3959, CH |