%0 Journal Article %A M D Crawfurd %A J Cheshire %A T M Wilson %A C R Woodhouse %T The demonstration of monozygosity in twins discordant for sacral agenesis. %D 1992 %R 10.1136/jmg.29.6.437 %J Journal of Medical Genetics %P 437-438 %V 29 %N 6 %U https://jmg.bmj.com/content/jmedgenet/29/6/437.full.pdf