[1] Boehringer Ingelheim Pharmaceut Inc, Dept Clin Dev, Ridgefield, CT 06877 USA
[2] Boehringer Ingelheim Pharmaceut Inc, Dept Clin Biostat, Ridgefield, CT 06877 USA
[3] Boehringer Ingelheim Pharma GmbH & Co KG, Dept Translat Med, Biberach, Germany
[4] Boehringer Ingelheim Pharma GmbH & Co KG, Dept Biometry, Biberach, Germany
[5] Univ Saarland, D-66123 Saarbrucken, Germany
[6] McMaster Univ, Populat Hlth Res Inst, Hamilton, ON, Canada
[7] Jefferson Med Coll, Wynnewood, PA USA
[8] Uppsala Univ, Uppsala Clin Res Ctr, Uppsala, Sweden
[9] Uppsala Univ, Dept Med Sci, Uppsala, Sweden