[1] Helsinki Univ Cent Hosp, Minerva Inst Med Res, Dept Med, Helsinki, Finland
[2] Boehringer Ingelheim Finland Ky, Helsinki, Finland
[3] Boehringer Ingelheim GmbH & Co KG, Biberach, Germany
[4] InVentiv Hlth Clin, Maidenhead, Berks, England
[5] Boehringer Ingelheim GmbH & Co KG, Ingelheim, Germany