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Tsomos, George; Ludwig, Björn; Grossen, Johannes; Pazera, Pawel; Gkantidis, Nikolaos (2014). Objective assessment of patient compliance with removable orthodontic appliances: a cross-sectional cohort study. Angle orthodontist, 84(1), pp. 56-61. Angle Orthodontists Research and Education Foundation 10.2319/042313-315.1
