OMNI Study--Assessing Therapies in Medtronic Pacemaker, Defibrillator, and Cardiac Resynchronization Therapy Devices.

New York Medical Center of Queens, New York

Heartwise Cardiology, New York

Cardio Research of New York Inc, Bayside

Cardiology Associates of Schenectady PC, Schenectady

Marshall-Rismiller & Associates, Pottsville

Cardiology Consultants of Philadelphia, Philadelphia

Shady Grove Adventist Hospital, Rockville

Cardiology Associates PC, Annapolis

Cardiovascular Specialists of Frederick, Frederick

Peninsula Cardiology Associates, Salisbury

CAMC Institute Clinical Trials Center, Charleston

Forsyth Medical Center, Winston-Salem

High Point Regional Health System, High Point

Heart Rhythm Associates PLLC, Greenville

Sanger Heart and Vascular Institute-Charlotte, Charlotte

Columbia Heart Clinic PA, Columbia

Pee Dee Cardiology, Florence

Piedmont Cardiology Associates (Greenwood SC), Greenwood

Emory University Hospital, Atlanta

Northeast Georgia Heart Center PC, Gainesville

Macon Electrophysiology Associates PC, Macon

Cardiovascular Consultants (Savannah GA), Savannah

Daytona Heart, Daytona Beach

Northwest Florida Heart Group PA, Pensacola

C. Raghavan MD PA, Orlando

Melbourne Internal Medicine Associates / Century Research Associates, Melbourne

Florida Arrhythmia Consultants, Fort Lauderdale

Florida Cardiovascular Institute PA, Tampa

Clark & Daughtrey Medical Group PA, Lakeland

Interventional Cardiac Consultants PLC, Trinity

James H Quillen VA Medical Center, Mountain Home

Memphis Heart Clinic, Memphis

Hattiesburg Clinic/Forrest General, Hattiesburg

Heart Care Inc, Gahanna

EMH Elyria Medical Center, Elyria

Stark Medical Specialties Inc, Massillon

Ohio Institute of Cardiac Care Inc, Springfield

Saint Mary Medical Center (Community Healthcare System), Hobart

Cardiovascular Clinical Associates PC, Southfield

Genesys Regional Medical Center, Grand Blanc

Cardiology Consultants of East Michigan, Lapeer

Borgess Medical Center, Kalamazoo

Great Lakes Heart and Vascular Institute PC, Saint Joseph

Cardiologists PC, Cedar Rapids

Cardiovascular Associates, Elk Grove Village

Midwest Cardiology PC, Belleville

Cardiology Consultants of Saint Louis County PC, St Louis

Cardiovascular Consultants (Cape Giradeau MO), Cape Girardeau

Heart Consultants PC, Omaha

Cardiovascular Associates LLC, Covington

Heart Consultants, Midwest City

Bluestem Cardiology PC, Bartlesville

Dallas VA Medical Center, Dallas

Cardiovascular Associates of East Texas PA, Tyler

Medical Center Hospital Odessa, Odessa

Cardiology Clinic of San Antonio, San Antonio

Heart Clinic PLLC, McAllen

Rocky Mountain Cardiology PC, Boulder

Pikes Peak Cardiology, Colorado Springs

Erol Kosar MD Inc, Torrance

Foothill Cardiology, Pasadena

Cardiology Clinic of San Antonio, Tarzana

Brett Berman Cardiology & Cardiac Electrophysiology, San Diego

Desert Cardiology Center / Desert Cardiology Medical Group Consultants, Rancho Mirage

Orange County Heart Institute & Research Center, Orange

California Heart Medical Associates, Fresno

Northern California Heart Care, Larkspur

Dwain L Coggins MD FACC, San Jose

Edward N Shen MD Inc, Honolulu

Pacific Heart Associates, Portland

Southern Arizona Health Care System, Tucson

Arkansas Cardiology PA (Little Rock AR), Little Rock

Apex Cardiology, Inglewood

Scripps Green Hospital Scripps Clinic Torrey Pines, La Jolla

Mission Internal Medical Group, Mission Viejo

Heart & Vascular Institute of Florida, Safety Harbor

The Heart Group PC, Evansville

King's Daughters Medical Center, Ashland

University Medical Associates, Louisville

The Heart Center, Glen Burnie

Baltimore Heart Associates (Randallstown MD), Randallstown

Internal Medicine & Cardiology Associates of Southeastern New England PC, Fall River

New Bedford Medical Associates, New Bedford

North Shore Cardiology Associates, Salem

University of Massachusetts Memorial Medical Center, Worcester

University of Michigan Health System (UMHS) VA Medical Center, Ann Arbor

University of Minnesota, Minneapolis

Mayo Clinic, Rochester

Saint Paul Cardiology, Saint Paul

Saint Louis Heart & Vascular PC, St Louis

Reno Heart Physicians, Reno

New Jersey Heart (Elizabeth NJ), Elizabeth

Englewood Hospital & Medical Center, Englewood

Saint Joseph's Regional Medical Center, Paterson

Cardiology Associates, Woodland Park

Albany Associates in Cardiology, Albany

Arrhythmia Associates of New York, New York

University Cardiovascular Associates (UCVA), Rochester

Saint Catherine of Sienna Medical Center, Smithtown

Wake Heart & Vascular Associates, Raleigh

Wilmington Cardiology LLC, Wilmington

Altru Hospital, Grand Forks

TriHealth Good Samaritan Hos, Cincinnati

The Toledo Clinic, Toledo

Terrance Khastgir MD PC, Oklahoma City

Altoona Regional Health Center, Altoona

Arrhythmia Institute, Newtown

Amarillo Heart Group, Amarillo

Hall Garcia Cardiology Associates, Houston

Utah Cardiology (Ogden UT), Ogden

Virginia Cardiovascular Specialists PC, Richmond

Wisconsin Heart SC, Madison

Arrhythmia Consultants of Milwaukee SC, Wauwatosa