O2 Is Down's arthritis (DA) a distinct disease from JIA?. (8th October 2018) - Foley, Charlene; Ansboro, Sharon; Floudas, Achilleas; Canavan, Mary; Biniecka, Monika; MacDermott, Emma-Jane; Killeen, Orla G; Mullan, Ronan; Fearon, Ursula