%0 Journal Article %A M A Ridler %A J M Berg %A M J Pendrey %A P SaldaƱa %A J A Timothy %T Familial occurrence of a small, supernumerary metacentric chromosome in phenotypically normal women. %D 1970 %R 10.1136/jmg.7.2.148 %J Journal of Medical Genetics %P 148-152 %V 7 %N 2 %U https://jmg.bmj.com/content/jmedgenet/7/2/148.full.pdf