General Discussion by Stolte, S, Delon, A, Schinke, R, Abel, B, Perry, D, Reisler, H, Troe, J, Hancock, G, Smith, S, Moore, E, Biesheuvel, terSteege, Janssen, Bulthuis, Wardlaw, D, Herman, M, Rizzo, T, Mills, I, Quack, M, Softley, T, Grice, R, Brouard, M, Simons, J, Walsh, R, Zyrianov, M