Emerging canine angiostrongylosis in northern England: five fatal cases - Yamakawa, Y; McGarry, JW; Denk, D; Dukes-McEwan, J; Macdonald, N; Mas, A; McConnell, F; Tatton, B; Valentine, EG; Wayne, J; Williams, JM; Hetzel, U (Vet Rec, 2009)