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2. Konservative Behandlung der Hüftreifungsstörung;Nelitz;Orthopäde,2008
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4. On changes in the acetabular vault angle of the hip joint in rotated and tilted positions of the pelvis in children;Tönnis;Z Orthop,1962
5. Sources of error in the roentgen evaluation of the hip in infancy;Ball;Ann Radiol,1968