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van Trijffel, Emiel, Robert Lindeboom, Patrick MM Bossuyt, Maarten A. Schmitt, Cees Lucas, Bart W. Koes, ja Rob AB Oostendorp. Indicating Spinal Joint Mobilisations or Manipulations in Patients With Neck or Low-back Pain: Protocol of an Inter-examiner Reliability Study Among Manual Therapists. BioMed Central, 2014.

van Trijffel, Emiel, et al. Indicating Spinal Joint Mobilisations or Manipulations in Patients With Neck or Low-back Pain: Protocol of an Inter-examiner Reliability Study Among Manual Therapists. BioMed Central, 2014.