Identification of apple cultivars hypoallergenic for birch pollen‐allergic individuals by a multidisciplinary in vitro and in vivo approach oleh Maria R. Strobl, Ute Vollmann, Julia Eckl‐Dorna, Astrid Radakovics, Verena Ibl, Madeleine Schnurer, Martin Brenner, Georgi Dermendjiev, Wolfram Weckwerth, Michael Neumüller, Florian Frommlet, Hilal Demir, Merima Bublin, Christian Müller, Barbara Bohle