1. BHE, Boston, MA, USA;
2. Health Economics & Outcomes Research, Patient Health & Impact, Pfizer Inc., Groton, CT, USA;
3. Worldwide Health Economics & Outcomes Research, Bristol-Myers Squibb Company, Lawrenceville, NJ, USA;
4. Health Economics & Outcomes Research, Patient Health & Impact, Pfizer Inc., New York, NY, USA;
5. US Medical, Bristol-Myers Squibb Company, Lawrenceville, NJ, USA;
6. Statistics, Global Biometrics and Data Management, Pfizer Inc., New York, NY, USA