For thes e purposes, the retrospective periods in which prior violations can be considered for purposes of multiple violations under Article 10.9.4 and the statute of limitations set forth in Art icle 16 WAKO Anti-Doping Rules       Page 70 of 81 are procedural rules, not substantive rules, and should be app lied retroactively along with all of the other procedural rules in these Anti -Doping Rules (provided, however, that Article 16 shall only be applied retroactively if the statute of limit ation period has not already expired by the Ef fective Date).