Outcome of 129 Pregnancies in Polycythemia Vera Patients: A Report of the European LeukemiaNET - Kai Wille; Maja Brouka; Johannes Bernhardt; Axel Rüfer; Emilia Niculescu-Mizil; Mirjana Gotic; Susanne Isfort; Steffen Koschmieder; Tiziano Barbui; Parvis Sadjadian; Tatjana Becker; Vera Kolatzki; et al. (HemaSphere, 2023)