Reikerås, Olav, Ingjald Bjerkreim, and Alf Kolbenstvedt. 1982. “Anteversion of the Acetabulum in Patients With Idiopathic Increased Anteversion of the Femoral Neck”. Acta Orthopaedica 53 (6):847-52. https://doi.org/10.3109/17453678208992837.