Factor I autoantibodies in patients with atypical hemolytic uremic syndrome: disease-associated or an epiphenomenon? by Kavanagh, D, Pappworth, I, Anderson, H, Hayes, C, Moore, I, Hunze, E, Bennaceur, K, Roversi, P, Lea, S, Strain, L, Ward, R, Plant, N, Nailescu, C, Goodship, T, Marchbank, K