Please refer to this study by its ClinicalTrials.gov identifier: NCT00043758
| Desert Cardiology of Tucson |
| Tucson, Arizona, United States, 85741 |
| Arkansas Heart |
| Little Rock, Arkansas, United States, 72211 |
| Northern California Medical Associates |
| Santa Rosa, California, United States, 95403 |
| San Diego Cardiac Center |
| San Diego, California, United States, 92123 |
| Cardiovascular Consultants Medical Group, Inc. |
| Walnut Creek, California, United States, 94598 |
| University of Colorado |
| Denver, Colorado, United States, 80262 |
| Yale University |
| New Haven, Connecticut, United States, 06510 |
| The Hoffman Heart Institute of CT/St. Francis Hospital |
| Hartford, Connecticut, United States, 06105 |
| Charlotte Heart Group |
| Port Charlotte, Florida, United States, 33952 |
| Cardiovascular Research Center of South Florida |
| Miami, Florida, United States, 33173 |
| Cardiology Associates of Fort Lauderdale |
| Fort Lauderdale, Florida, United States, 33308 |
| The Heart and Vascular Institute of Florida |
| St. Petersburg, Florida, United States, 33701 |
| Cardiovascular Associates of Augusta, PA |
| Augusta, Georgia, United States, 30901 |
| Georgia Heart Specialists |
| Covington, Georgia, United States, 30014 |
| Illinois Heart and Lung Associates, SC |
| Normal, Illinois, United States, 61761 |
| The Care Group, LLC |
| Indianapolis, Indiana, United States, 46260 |
| Medical Research Institute |
| Slidell, Louisiana, United States, 70458 |
| Maine Cardiology Associates |
| Portland, Maine, United States, 04102 |
| Androscoggin Cardiology Associates |
| Auburn, Maine, United States, 04210 |
| Pentucket Medical Associates |
| Haverhill, Massachusetts, United States, 01839 |
| Mystic Cardiology Associates, Inc. |
| Medford, Massachusetts, United States, 02155 |
| John Dingell VA Medical Center |
| Detroit, Michigan, United States, 48201 |
| Harper Hospital/Wayne State University |
| Detroit, Michigan, United States, 48201 |
| South Bay Cardiovascular Associates |
| West Islip, New York, United States, 11795 |
| St. Luke's-Roosevelt Hospital Center |
| New York, New York, United States, 10025 |
| The Lindner Clinical Trial Center |
| Cincinnati, Ohio, United States, 45219 |
| Midwest Cardiology Research Foundation |
| Columbus, Ohio, United States, 43202 |
| North Ohio Research LTD. |
| Sandusky, Ohio, United States, 44870 |
| North Ohio Research LTD |
| Lorraine, Ohio, United States, 44053 |
| Guthrie Clinic, LTD |
| Sayre, Pennsylvania, United States, 18840 |
| Medical College of Pennsylvania |
| Philadelphia, Pennsylvania, United States, 19129 |
| University Cardiology Foundation |
| Providence, Rhode Island, United States, 02905 |
| Miriam Hospital |
| Providence, Rhode Island, United States, 02905 |
| Ralph H. Johnson VAMC |
| Charleston, South Carolina, United States, 29401 |
| Stern Cardiovascular Center |
| Memphis, Tennessee, United States, 38120 |
| Health Sciences Center |
| Winnipeg, Manitoba, Canada, R3A 1R9 |
| Health Sciences Center Memorial University of Newfoundland |
| St. John's, Newfoundland and Labrador, Canada, A1B 3V6 |
| London Health Sciences Center |
| London, Ontario, Canada, N6A 4G5 |
| The Toronto Hospital |
| Toronto, Ontario, Canada, M5G 2C4 |
| St. Michael's Hospital |
| Toronto, Ontario, Canada, M5B 1W8 |
Otsuka Pharmaceutical Development & Commercialization, Inc.