GMD–German National Research Center for Information Technology, Institute for Algorithms and Scientific Computing, Schloss Birlinghoven, D-53754 Sankt Augustin, Germany; Institute of Clinical and Molecular Virology, German National Reference Center for Retroviruses, University of Erlangen-Nürnberg, Schlossgarten 4, D-91054 Erlangen, Germany; Institute of Virology, University of Cologne, Fürst-Pückler Strasse 56, D-50935 Köln, Germany; and Center of Advanced European Studies and Research,... (At 2002-06-11)
