[1] Leiden Univ, Med Ctr, Leiden, Netherlands
[2] Univ Hosp Essen Ruhr, Essen, Germany
[3] Clin & Matern Suizo Argentina, Buenos Aires, DF, Argentina
[4] Mt Sinai Sch Med, New York, NY USA
[5] RTI Hlth Solut, Durham, NC USA
[6] Beijing Anzhen Hosp, Beijing, Peoples R China
[7] Boehringer Ingelheim Pharmaceut Inc, 90 E Ridge POB 368, Ridgefield, CT 06877 USA
[8] Boehringer Ingelheim Ltd, Burlington, ON, Canada
[9] Boehringer Ingelheim Int GmbH, Ingelheim, Germany
[10] Birmingham City Hosp, Birmingham, W Midlands, England