| Firm | Analyst |
| Argus Research | D. Toung |
| Atlantic Equities | B. Yeoh |
| Banc of America – Merrill Lynch | R. Hopkins |
| Barclays Capital | A. Feinstein |
| BMO Capital Markets | J. Wuensch |
| Canaccord Adams | W. Plovanic |
| Citi | M. Dodds |
| Cowen & Company | D. Schenkel |
| Credit Suisse | K. Stewart |
| Deutsche Bank North America | T. Levy |
| FTN Midwest Securities Corp. | E. Snyder |
| Goldman Sachs & Co. | D. Roman |
| JMP Securities | S. Lichtman |
| JP Morgan | M. Weinstein |
| Leerink Swann | R. Wise |
| Morgan Stanley | D. Lewis |
| Needham & Company | S. Harish |
| Noble Financial Capital Markets | J. Wald |
| Piper Jaffray | M. Miksic |
| RBC Capital Markets | G. Novarro |
| Robert W. Baird & Co., Inc. | J. Johnson |
| Sanford E. Bernstein & Co., LLC | D. Sung, Ph.D. |
| SMH Capital | S. Kalia |
| Soleil - Great Lakes Review | E. Schlang |
| Stifel Nicolaus & Company, Inc | G. Simpson |
| UBS | B. Nudell |
| Wachovia Capital Markets, LLC | M. Matson |
| Wall Street Partners | D. Urani |
| William Blair & Company, LLC | B. Andrew |