Clinical Pharmacometrics, Pharmaceuticals Research & Development, Bayer AG, 13353, Berlin, Germany. alexander.solms@bayer.com. Bayer, Whippany, NJ, USA. Centre for Thrombosis and Haemostasis, Lund University, Skåne University Hospital, Malmö, Sweden. Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hanover, Germany. McMaster-Bayer Endowed Research Chair in Clinical Epidemiology of Congenital Bleeding Disorders, Department of Medicine, McMaster University, Hamilton, Canada. Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada. LAP&P Consultants BV, Leiden, the Netherlands. Center for Thrombosis and Hemorrhagic Diseases, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy. Specialized Hospital for Active Treatment, Sofia, Bulgaria.