Union of light ion therapy centers in Europe (ULICE EC FP7) – Objectives and achievements of joint research activities by Pötter, R, Balosso, J, Baumann, M, Bert, C, Davies, J, Enghardt, W, Fossati, P, Harris, S, Jones, B, Krämer, M, Mayer, R, Mock, U, Pullia, M, Schreiner, T, Dosanjh, M, Debus, J, Orecchia, R, Georg, D, Ulice Collaborative Research Group