Institute of Anatomy Pestalozzistrasse 20 CH-4056 Basel Tel. ++41/61 267 39 20/21 Fax ++41/61 267 39 59			Department of Biomedicine Mattenstrasse 28 CH-4058 Basel Tel. ++41/61 695 30 31 (Sec. 13:30 - 17:30) Fax ++41/61 695 30 32