Nielsen, J., Jacobsen, P., Mohr, J., Niebuhr, E., Philip, J., Schulz-Larsen, P., Videbech, P. & Visfeldt, J. (1980). Chromosome abnormalities and variants in the DCCR, april 1978. I J. Nielsen (red.), The Danish Cytogenetic Central Register. Organization and results (s. 36-69). Thieme Medical Publishers.