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Burla, Laila; Knierim, Birte; Barth, Jurgen; Liewald, Katharina; Duetz, Margreet; Abel, Thomas (2008). From text to codings: intercoder reliability assessment in qualitative content analysis. Nursing research, 57(2), pp. 113-7. Hagerstown, Md.: Wolters Kluwer Lippincott Williams & Wilkins 10.1097/01.NNR.0000313482.33917.7d
Duetz, Margreet; Burla, Laila; Liewald, Katharina; Reichenbach, Stephan; Tscherrig, Michel; Abel, Thomas (2008). Therapie oder einfach mehr Bewegung? Jedem Rücken seine Mischung. Schweizerisches Medizin-Forum SMF / Swiss medical forum / Forum médical suisse FMS, 8(15), pp. 275-7. Basel: EMH Editores Medicorum Helveticorum
Müller, Urs; Duetz, Margreet; Röder, Christoph; Greenough, C. G. (2004). Condition-specific outcome measures for low back pain. Part I: Validation. European spine journal, 13(4), pp. 301-313. Springer 10.1007/s00586-003-0665-1
