Interim Results of a Non-interventional Study on Efficacy and Tolerability of a VWF/FVIII Concentrate in von Willebrand's Disease - Halimeh, S.; Daoud, M.; Lang, T.; Rieke, M.; Kadar, J.; Alesci, S.; Dempfle, C.-E.; Koscielny, J.; von Depka, M. Prondzinski; Feddern, J.; Seeger, S. (Hämostaseologie, 2019)