ProBioGen AG Herbert-Bayer-Straβe 8 13086 Berlin Germany;
Sartorius Stedim Cellca GmbH Erwin-Rentschler-Str 21 88471 Laupheim Germany;
Vironova AB G(a)vlegatan 22 113 30 Stockholm Sweden;
Department of Laboratory Medicine Karolinska Universitetsjukhuset I Huddinge 14152 Huddinge Sweden;