Online Appendix for the following April 27, 2010 JACC article TITLE: Infiltrative Cardiovascular Diseases: Cardiomyopathies That Look Alike AUTHORS: James B. Seward, MD, Grace Casaclang-Verzosa, MD APPENDIX The authors wish to acknowledge the following people for their contributions to this manuscript. Samuel J. Asirvatham, MD–Electrocardiography and Electrophysiologic Features of Infiltrative Cardiomyopathies, Associate Professor of Medicine, Mayo Clinic College of Medicine, Consultant, Invasive Cardiology, Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota. Diego Bellavia, MD–Tissue Doppler in Cardiac Amyloid, Research Fellow in Echocardiography, Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota. William D. Edwards, MD–Histopathologic Features of Infiltrative Cardiomyopathies, Professor of Pathology, College of Medicine, Mayo Clinic, Consultant, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota. Morie A. Gertz, MD–Cardiac Amyloidosis, Chairman, Department of Medicine, Consultant, Division of Hematology, Mayo Clinic, Rochester, Minnesota. Philip R. Greipp, MD–Cardiac Amyloidosis, Professor of Medicine and Laboratory Medicine and Pathology, College of Medicine, Mayo Clinic, Consultant, Division of Hematology, Mayo Clinic, Rochester, Minnesota. Chinami Miyazaki, MD–Tissue Doppler and Strain Rate Imaging, Research Associate in Echocardiography, Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota. Lyle J. Olson, MD–Cardiac Amyloidosis, Consultant, Noninvasive Cardiology, Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota. Ulrich Specks, MD–Wegener Disease and Sarcoidosis, Consultant, Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, Minnesota. Imran S. Syed, MD–Magnetic Resonance Imaging and Computed Tomography, Instructor in Medicine, Mayo Clinic College of Medicine, Senior Associate Consultant, Cardiology, Mayo Health System. A Jamil Tajik, M.D., FACC – Cardiomyopathies, Thomas J. Watson, Jr. Professor and Professor of Medicine and Pediatrics Mayo Clinic Chairman (Emeritus), Zayed Cardiovascular Center, Mayo Clinic, Rochester, Minnesota, Consultant, Division of Cardiovascular Diseases, Internal Medicine, and Pediatric Cardiology, Mayo Clinic, Scottsdale, Arizona.