]60 / IWF 2021 ANTI-DOPING RULES›  IWF 2021 ANTI-DOPING RULESARTICLE 20ADDITIONAL ROLES AND RESPONSIBILITIES OF ATHLETES20.1   To be knowledgeable of and comply with these Anti-Doping Rules.20.2  To be available for Sample  collection at all times.8020.3   To take responsibility, in the context of anti-doping, for what they ingest and  Use .