1. National Reference Centre for Wild Animal Diseases, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Regione Amerique 7/G, 11020 Quart, Aosta, Italy
2. Veterinary Microbiology, School of Veterinary Medicine, Faculty of Agriculture, Iwate University, 18-8, Ueda 3 Chome, Morioka 020-8550, Iwate, Japan
3. Mycoplasma Group, Department of Statutory and Exotic Bacteria, Veterinary Laboratories Agency (Weybridge), Woodham Lane, New Haw, Addlestone, Surrey, KT15 3NB, UK
4. Dipartimento di Biologia Animale, Universita`degli Studi di Pavia, Piazza Botta 9, 27100 Pavia, Italy