COVID‐19 infection in patients on anti‐complement therapy: The Leeds National Paroxysmal Nocturnal Haemoglobinuria service experience. (18th September 2020) - Pike, Alexandra; Muus, Petra; Munir, Tahla; Mitchell, Lindsay; Arnold, Louise; Riley, Kathryn; Houghton, Nicola; Forrest, Briony; Gachev, Jeanifer; Hillmen, Peter; Griffin, Morag