Recent advances in methodology for clinical trials in small populations: the InSPiRe project oleh Tim Friede, Martin Posch, Sarah Zohar, Corinne Alberti, Norbert Benda, Emmanuelle Comets, Simon Day, Alex Dmitrienko, Alexandra Graf, Burak Kürsad Günhan, Siew Wan Hee, Frederike Lentz, Jason Madan, Frank Miller, Thomas Ondra, Michael Pearce, Christian Röver, Artemis Toumazi, Steffen Unkel, Moreno Ursino, Gernot Wassmer, Nigel Stallard