Prolonged survival with increasing duration of lenalidomide maintenance after autologous transplant for multiple myeloma. Issue 2 (28th January 2019) - Amsler, Isabel G.; Jeker, Barbara; Mansouri Taleghani, Behrouz; Bacher, Ulrike; Betticher, Daniel; Egger, Thomas; Zander, Thilo; Luethi, Jean-Marc; Novak, Urban; Pabst, Thomas