Gene therapy of hemophilia: Hub centres should be haemophilia centres: A joint publication of EAHAD and EHC. Issue 3 (9th March 2022) - Miesbach, Wolfgang; Baghaei, Fariba; Boban, Ana; Chowdary, Pratima; Coppens, Michiel; Hart, Daniel P.; Jimenez‐Yuste, Victor; Klamroth, Robert; Makris, Mike; Noone, Declan; Peyvandi, Flora