By Larry P. Tilley, DVM, DACVIM(Internal Medicine), President, VetMed Consultants, Inc., Consultant, New Mexico Veterinary Specialty Referral Center, Santa Fe, NM; Francis W. K. Smith, Jr., DVM, DACVIM(Internal Medicine & Cardiology), Vice President, VetMed Consultants, Inc., Lexington, MA; Clinical Assistant Professor, Department of Medicine, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA; Mark Oyama, DVM, DACVIM(Cardiology), Associate Professor, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA; and Meg M. Sleeper, VMD, DACVIM(Cardiology), Assistant Professor and Section Chief, Cardiology, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA |