1. Department of Clinical Sciences; Ross University School of Veterinary Medicine, West Farm, PO Box 127, St. Kitts, West Indies
2. Department of Community Health Sciences; Faculty of Medicine; University of Calgary; 330 Hospital Drive NW Calgary AB 4N1 T2N Canada
3. International Graduate Medical Education; Viale Romagna 51 20133 Milano Italy
4. Department of Population Medicine; Ontario Veterinary College; University of Guelph; 50 Stone Road East Guelph ON N1G2C6 Canada