1. Division of Pharmacoepidemiology and PharmacoeconomicsDepartment of MedicineBrigham and Women's Hospital and Harvard Medical School Boston Massachusetts USA
2. Corporate Department Global EpidemiologyBoehringer Ingelheim International, GmbH Ingelheim Germany
3. Hannover Medical SchoolInstitute for Epidemiology, Social Medicine and Health Systems Research Hannover Germany
4. BI X GmbH Ingelheim Germany