1. Department of Cardiology and Caspary Research Institute; The Animal Medical Center; New York New York U.S.A.
2. Department of Clinical Sciences, North Carolina State University; Raleigh North Carolina U.S.A.
3. Lamb Consulting; Minneapolis Minnesota U.S.A.
4. Department of Veterinary Clinical Sciences; The Ohio State University; Columbus Ohio U.S.A.
5. Alfort Cardiology Unit; Ecole Nationale Vétérinaire d'Alfort; Maisons-Alfort Cedex France
6. Department of Veterinary Clinical Sciences and Services; The Royal Veterinary College; Hatfield, Hertfordshire United Kingdom
7. Clinic of Small Animal Medicine; Ludwig-Maximilians University; Munich Germany
8. Department of Veterinary Clinical Sciences; Purdue University; West Lafayette Indiana U.S.A.
9. Department of Statistics, North Carolina State University; Raleigh North Carolina U.S.A.
10. Department of Clinical Sciences, Swedish University of Agricultural Sciences; Uppsala Sweden
11. Department of Veterinary Medicine and Surgery; University of Missouri; Columbia Missouri U.S.A.
12. Advanced Veterinary Care Center; Lawndale California U.S.A.
13. William R. Pritchard Veterinary Medical Teaching Hospital, University of California-Davis; Davis California U.S.A.
14. Department of Veterinary Clinical Sciences; Iowa State University; Ames Iowa U.S.A.
15. Department of Small Animal Clinical Sciences; Virginia-Maryland Regional College of Veterinary Medicine; Blacksburg Virginia, U.S.A.
16. Royal (Dick) SVS Hospital for Small Animals, The University of Edinburgh; Roslin Midlothian United Kingdom
17. Department for Companion Animals and Horses; University of Veterinary Medicine; Vienna Austria
18. Department of Clinical Sciences; Kansas State University; Manhattan Kansas U.S.A.
19. Animal CardioPulmonary Consultancy; Masta Stavelot, Belgium
20. Department of Companion Animals; Atlantic Veterinary College, University of Prince Edward Island; Charlottetown Prince Edward Island Canada
21. Department of Clinical Sciences; Tufts University, Cummings School of Veterinary Medicine; North Grafton Massachusetts U.S.A.
22. Tufts Veterinary Emergency Treatment & Specialties; Walpole Massachusetts U.S.A.
23. Department of Cardiology; Clinica Veterinaria Malpensa; Varese Italy
24. Fachtieraerztin fur Kleintiere; Wissen and Bonn Germany
25. Veterinary Specialty and Emergency Center; Levittown Pennsylvania U.S.A.
26. Department of Cardiology, Clinica Veterinaria Gran Sasso; Milan Italy
27. Department of Clinical Sciences; Colorado State University; Fort Collins Colorado U.S.A.
28. Department of Small Animal Clinical Sciences; University of Florida; Gainesville Florida
29. Department of Clinical Sciences, The Koret School of Veterinary Medicine; Rehovot Israel
30. Departamento de Medicina y Cirugía Animal; Universidad de Murcia; Murcia Spain
31. Veterinary Medical Specialists of Houston; Houston Texas U.S.A.
32. Department of Internal Medicine; University of São Paulo; São Paulo Brazil
33. Department of Clinical Studies, University of Guelph; Guelph Ontario Canada
34. Department of Small Animal Clinical Sciences; Texas A&M University; College Station Texas U.S.A.
35. William R. Pritchard Veterinary Medical Teaching Hospital, University of California-Davis; Davis California, U.S.A.
36. Department of Veterinary Medicine; University of Milan; Milan Italy
37. Department of Clinical Sciences; Cornell University; Ithaca New York U.S.A.
38. Department of Veterinary Clinical Sciences; University of Minnesota; St. Paul Minnesota U.S.A.
39. Department of Medical Sciences; University of Wisconsin School of Veterinary Medicine; Madison Wisconsin U.S.A.
40. Department of Veterinary Sciences; University of Parma; Parma Italy
41. Cabinet Vétérinaire et Centre d'Imagerie; Geneva Switzerland
42. Department of Internal Medicine; University of Veterinary Medicine; Budapest Hungary
43. Cardiospecial Veterinary Hospital; Taipei Taiwan
44. Bryanston Veterinary Hospital; Bryanston South Africa
45. University College Dublin Veterinary Hospital; University College Dublin; Dublin Ireland
46. Department of Clinical Studies; University of Pennsylvania; Philadelphia Pennsylvania U.S.A.
47. Veterinary Clinic Beliy Klyk; Moscow Russia
48. Azabu University; Sagamihara Kanagawa Japan
49. Department of Veterinary Clinical Sciences; Louisiana State University; Baton Rouge, Louisiana U.S.A.
50. Jasmine Animal Cardiovascular Center; Yokohama Kanagawa Japan
51. Department of Medicine; Surgery and Zootechnics for Small Species, Universidad Nacional Autónoma de México; Mexico City Mexico