18.4  All MNA s shall take appropriate action to enforce compliance with the Code , International Standards , and these Anti-Doping Rules by  inter alia :   (i) conducting Testing  only under the document ed authority of WT and us ing their National Anti -Doping Organization or other Sample collection authority to collect Samples  in compliance with the International Standard  for Testing and Investigations ;   but the period of Ineligibility applied is shorter than the period provided for in the Code, then WT and all other S ignatories should recognize the finding of an anti -doping rule violation and the Athlete’s National Anti -Doping Organization should conduct a hearing consistent with Article 8 to determine whether the longer period of Ineligibility provided in the Code sho uld be imposed.