Definition, aims, and implementation of GA2LEN/HAEi Angioedema Centers of Reference and Excellence. Issue 8 (27th April 2020) - Maurer, Marcus; Aberer, Werner; Agondi, Rosana; Al‐Ahmad, Mona; Al‐Nesf, Maryam Ali; Ansotegui, Ignacio; Arnaout, Rand; Arruda, Luisa Karla; Asero, Riccardo; Aygören‐Pürsün, Emel; Banerji, Aleena; Bauer, Andrea; et al.