Please refer to this study by its ClinicalTrials.gov identifier: NCT00082589
| Pfizer Investigational Site |
| Walnut Creek, California, United States, 94598-3084 |
| Pfizer Investigational Site |
| Santa Rosa, California, United States, 95403 |
| Pfizer Investigational Site |
| San Diego, California, United States, 92103-8411 |
| Pfizer Investigational Site |
| Castro Valley, California, United States, 94546 |
| Pfizer Investigational Site |
| Denver, Colorado, United States, 80262 |
| Pfizer Investigational Site |
| New Haven, Connecticut, United States, 06510 |
| Pfizer Investigational Site |
| Fort Lauderdale, Florida, United States, 33308 |
| Pfizer Investigational Site |
| Jacksonville, Florida, United States, 32216 |
| Pfizer Investigational Site |
| Jacksonville, Florida, United States, 32209 |
| Pfizer Investigational Site |
| Augusta, Georgia, United States, 30901 |
| Pfizer Investigational Site |
| Covington, Georgia, United States, 30014 |
| Pfizer Investigational Site |
| Atlanta, Georgia, United States, 30309-1721 |
| Pfizer Investigational Site |
| Boise, Idaho, United States, 83704-0107 |
| Pfizer Investigational Site |
| Bloomington, Illinois, United States, 61701 |
| Pfizer Investigational Site |
| Normal, Illinois, United States, 61761 |
| Pfizer Investigational Site |
| Indianapolis, Indiana, United States, 46260 |
| Pfizer Investigational Site |
| Indianapolis, Indiana, United States, 46202 |
| Pfizer Investigational Site |
| Auburn, Maine, United States, 04210 |
| Pfizer Investigational Site |
| Detroit, Michigan, United States, 48201 |
| Pfizer Investigational Site |
| Ann Arbor, Michigan, United States, 48105 |
| Pfizer Investigational Site |
| Minneapolis, Minnesota, United States, 55415 |
| Pfizer Investigational Site |
| Minneapolis, Minnesota, United States, 55422 |
| Pfizer Investigational Site |
| St. Louis, Missouri, United States, 63104 |
| Pfizer Investigational Site |
| St. Louis, Missouri, United States, 63110-0250 |
| Pfizer Investigational Site |
| St. Louis, Missouri, United States, 63117 |
| Pfizer Investigational Site |
| St. Louis, Missouri, United States, 63110 |
| Pfizer Investigational Site |
| Lexington, Nebraska, United States, 68850 |
| Pfizer Investigational Site |
| Lincoln, Nebraska, United States, 68516 |
| Pfizer Investigational Site |
| McCook, Nebraska, United States, 69001 |
| Pfizer Investigational Site |
| Lebanon, New Hampshire, United States, 03756 |
| Pfizer Investigational Site |
| New York, New York, United States, 10032 |
| Pfizer Investigational Site |
| Albany, New York, United States, 12205 |
| Pfizer Investigational Site |
| West Islip, New York, United States, 11795 |
| Pfizer Investigational Site |
| Manhasset, New York, United States, 11030 |
| Pfizer Investigational Site |
| Mount Airy, North Carolina, United States, 27030 |
| Pfizer Investigational Site |
| Winston-Salem, North Carolina, United States, 27109 |
| Pfizer Investigational Site |
| Cincinnati, Ohio, United States, 45219 |
| Pfizer Investigational Site |
| Sandusky, Ohio, United States, 44870-3390 |
| Pfizer Investigational Site |
| Lorain, Ohio, United States, 44053 |
| Pfizer Investigational Site |
| Oklahoma City, Oklahoma, United States, 73120 |
| Pfizer Investigational Site |
| Sayre, Pennsylvania, United States, 18840 |
| Pfizer Investigational Site |
| Philadelphia, Pennsylvania, United States, 19107 |
| Pfizer Investigational Site |
| Philadelphia, Pennsylvania, United States, 19104 |
| Pfizer Investigational Site |
| Pawtucket, Rhode Island, United States, 02860 |
| Pfizer Investigational Site |
| Charleston, South Carolina, United States, 29401 |
| Pfizer Investigational Site |
| Nashville, Tennessee, United States, 37212 |
| Pfizer Investigational Site |
| Germantown, Tennessee, United States, 38138 |
| Pfizer Investigational Site |
| Houston, Texas, United States, 77030 |
| Pfizer Investigational Site |
| Beaumont, Texas, United States, 77630 |
| Pfizer Investigational Site |
| Beaumont, Texas, United States, 77702 |
| Pfizer Investigational Site |
| Roanoke, Virginia, United States, 24014 |
| Pfizer Investigational Site |
| Galax, Virginia, United States, 24333 |
| Pfizer Investigational Site |
| Madison, Wisconsin, United States, 53792 |