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Aghayev, Emin; Zullig, Nicolas; Diel, Peter; Dietrich, Daniel J.; Benneker, Lorin Michael (2014). Development and validation of a quantitative method to assess pedicle screw loosening in posterior spine instrumentation on plain radiographs. European spine journal, 23(3), pp. 689-694. Springer 10.1007/s00586-013-3080-2
