Introduction

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Sokoloff L. : The biology of degenerative joint disease (University of Chicago Press, Chicago 1969)

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Thompson D'A. W. : in Bonner On growth and form (Cambridge University Press, New York 1961)

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Wilkinson J. A. : Prime factors in the etiology of congenital dislocation of the hip. J. Bone Jt Surg. 45B: 269–283 (1963)