1. Center for Microbiology and Hygiene, Institute for Virology, Medical Center, University of Freiburg, 79104 Freiburg, Germany
2. Faculty of Medicine, University of Freiburg, 79110 Freiburg, Germany
3. German Consulting Laboratory for HSV and VZV, Medical Center, University of Freiburg, 79104 Freiburg, Germany
4. Helios Kliniken Schwerin, 19055 Schwerin, Germany