Gypsy (Sinti and Roma) Deportation Sophie Ehrhardt of the Racial Hygiene Research Centre at the Reich Bureau for Health at the Reichsgesundheitsamt (RHF), conducting interview with an old woman. Her research provided the pseudo-scientific basis for the extermination and forced sterilization of thousands of Sinti and Roma. After completion of the research deportations to Poland started. Ehrhardt continued her academic career in Tubingen after the war. Holocaust. Germany. 1938