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Cevallos, Myriam; Züllig, Stephanie; Christen, Andri; Meier, Brigitte E; Goetz, Martin; Coslovsky, Michael; Trelle, Sven (2015). A pilot test of the new Swiss regulatory procedure for categorizing clinical trials by risk: A randomized controlled trial. Clinical trials, 12(6), pp. 677-687. Sage 10.1177/1740774515591983
