1. Heart Input Output Inc., 128 N. Craig Street, Suite 406, Pittsburgh, U.S.A., --- Select a Country ---
2. Cardiology Consultants of Philadelphia, Philadelphia, Pennsylvania, U.S.A., --- Select a Country ---
3. Jefferson University Hospital, Philadelphia, Pennsylvania, U.S.A., --- Select a Country ---
4. The Cardiovascular Research Foundation, New York, U.S.A., --- Select a Country ---