Hvid, I. and Strömqvist, B. 1988. Proceedings of the Scandinavian Orthopedic Association 44th Assembly: Århus, Denmark, June 8–11, 1988. Acta Orthopaedica. 59, sup227 (Jan. 1988), 7–132. DOI:https://doi.org/10.3109/17453678809155633.