Multicenter, Randomized, Double-Blind, Placebo Controlled, Efficacy Study on the Effects of Tolvaptan on Left Ventricular Dilatation in Congestive Heart Failure Patients

St. Luke's-Roosevelt Hospital Center, New York

South Bay Cardiovascular Associates, West Islip

Guthrie Clinic, LTD, Sayre

Medical College of Pennsylvania, Philadelphia

Ralph H. Johnson VAMC, Charleston

Georgia Heart Specialists, Covington

Cardiovascular Associates of Augusta, PA, Augusta

Cardiovascular Research Center of South Florida, Miami

Cardiology Associates of Fort Lauderdale, Fort Lauderdale

The Heart and Vascular Institute of Florida, St. Petersburg

Charlotte Heart Group, Port Charlotte

Stern Cardiovascular Center, Memphis

Midwest Cardiology Research Foundation, Columbus

North Ohio Research LTD, Lorraine

North Ohio Research LTD., Sandusky

The Lindner Clinical Trial Center, Cincinnati

The Care Group, LLC, Indianapolis

Harper Hospital/Wayne State University, Detroit

John Dingell VA Medical Center, Detroit

Illinois Heart and Lung Associates, SC, Normal

Medical Research Institute, Slidell

Arkansas Heart, Little Rock

University of Colorado, Denver

Desert Cardiology of Tucson, Tucson

San Diego Cardiac Center, San Diego

Cardiovascular Consultants Medical Group, Inc., Walnut Creek

Northern California Medical Associates, Santa Rosa

The Hoffman Heart Institute of CT/St. Francis Hospital, Hartford

Yale University, New Haven

Androscoggin Cardiology Associates, Auburn

Maine Cardiology Associates, Portland

Pentucket Medical Associates, Haverhill

Mystic Cardiology Associates, Inc., Medford

Miriam Hospital, Providence

University Cardiology Foundation, Providence

Health Sciences Center, Winnipeg

Health Sciences Center Memorial University of Newfoundland, St. John's

London Health Sciences Center, London

St. Michael's Hospital, Toronto

The Toronto Hospital, Toronto