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Bayer, Stefan; Komor, Nathalie; Kramer, Annina; Albrecht, Dominic; Mericske-Stern, Regina; Enkling, Norbert (2012). Retention force of plastic clips on implant bars: a randomized controlled trial. Clinical oral implants research, 23(12), pp. 1377-84. Oxford: Wiley-Blackwell 10.1111/j.1600-0501.2011.02312.x
