An Open-Label Extension Study to Assess the Long-Term Efficacy and Safety of a Plasma-Derived von Willebrand Factor (VWF)/Factor VIII (FVIII) Concentrate in Patients with von Willebrand Disease (SWIFT-VWDext Study)

一项开放标签扩展研究，旨在评估血浆来源的血管性血友病因子 (VWF)/因子 VIII (FVIII) 浓缩物在血管性血友病患者中的长期疗效和安全性 (SWIFT-VWDext 研究)