Registered Testing Pool : The pool of highest -priority Athletes  established separately at the international level by International Federations and at the national level by National Anti -Doping Organizations , who are   81  [Comment to Possession: Under this definition, anabolic steroids found in an Athlete's  car would constitute a violation unless the Athlete establishes that someone else used the car; in that event, UWW must establish that, even though the Athlete did not have exclusive control over the car, the Athlete knew about the anabolic steroids and i ntended to have control over them.