1. Institute of Diagnostic Virology, Friedrich-Loeffler-Institut (FLI), Suedufer 10, 17493 Greifswald – Insel Riems, Germany
2. Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, Via Bianchi 7, 25125 Brescia, Italy
3. IDEXX Switzerland AG, Stationsstrasse 12, 3097 Liebefeld-Bern, Switzerland