Poor functional antibody responses are present in nearly all patients with chronic lymphocytic leukaemia, irrespective of total IgG concentration, and are associated with increased risk of infection - Parry, Helen Marie; Birtwistle, Jane; Whitelegg, Alison; Hudson, Christopher D.; McSkeane, Tina; Hazlewood, Peter; Mudongo, Nyasha; Pratt, Guy; Moss, Paul; Drayson, Mark T.; Murray, Jim; Richter, Alex G. (Wiley, 2015)