]ARTICLE 3 Proof of Doping ARTICLE 4 The Prohibited ListWorld Anti-Doping Code 202131have committed an anti-doping rule violation based on the Athlete’s or other Person’s  refusal, after a request made in a reasonable time in advance of the hearing, to appear at the hearing (either in person or telephonically as directed by the hearing panel) and to answer questions from the hearing panel or the Anti-Doping Organization asserting the anti-doping rule violation.ARTICLE 4 THE PROHIBITED LIST4.1 Publication and Revision of the Prohibited ListWADA  shall, as often as necessary and no less often than annually, publish the Prohibited List as an International Standard.