3.2.7  The hearing panel in a hearing on an anti-doping rule violation may draw an inference adverse to the Athlete or other Person who is asserted to have 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 by telephone as directed by the hearing panel) and to answer questions either from the hearing panel or from the BIU or other Anti-Doping Organisation asserting the anti-doping rule violation.4.