Swallowing dysfunction in cancer patients - Raber-Durlacher, J E; Brennan, M T; Verdonck-de Leeuw, I M; Gibson, R J; Eilers, J G; Waltimo, T; Bots, C P; Michelet, M; Sollecito, T P; Rouleau, T S; Sewnaik, A; Bensadoun, R J; Fliedner, M C; Silverman, S; Spijkervet, FK L (Support Care Cancer, 2012)