Gypsy (Sinti and Roma) Deportation Dr. Robert Ritter, head of the Racial Hygiene Research Centre at the Reich Bureau for Health at the Reichsgesundheitsamt (RHF), conducting interview with an old woman. His 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. Holocaust. Germany. 1938