Heinz Ludwig, Zdenek Adam, Elena Tóthová, Roman Hajek, Boris Labar, Miklós Egyed, Ivan Spicka, Heinz Gisslinger, Johannes Drach, Ingrid Kuhn, Axel Hinke, Niklas Zojer. Thalidomide maintenance treatment increases progression-free but not overall survival in elderly patients with myeloma. Haematologica 2010;95(9):1548-1554; https://doi.org/10.3324/haematol.2009.020586.