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(1954). Experiences Gained from Syondylo-Syndesis Operations with H-Shaped Bone Transplantations in the Case of Degeneration of Discs in the Lumbar Back. Acta Orthopaedica Scandinavica: Vol. 24, No. 1-4, pp. 207-215.
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Arvid Hellstadius (1954) studied this question.
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