Defines the people who perform imaging experimenters. Each experimenter may belong to one or more groups. The ExperimenterGroup ST defines the relationships between Groups and Experimenters Define a la persona que realiza experimentos con imagenes. Cada investigador puede pertenecer a uno o mas grupos. Defines groups of experimenters. This can be a lab or a project group. It is not meant to represent an institution or a company. Define grupos de investigadores. Esto puede ser un laboratorio o un proyecto grupal. No esta pensado para representar una institucion o compania Defines the relationship between Experimenters and Groups. Define la relacion entre investigadores y grupos.