Research priorities in advanced heart failure: James Lind alliance priority setting partnership by Taylor, CJ, Huntley, AL, Burden, J, Gadoud, A, Gronlund, T, Jones, NR, Wicks, E, McKelvie, S, Byatt, K, Lehman, R, King, A, Mumford, B, Feder, G, Mant, J, Hobbs, F, Johnson, R