If the Athlete  or other Person  rebuts the preceding presumption by showing that a departure fr om the International Standard  for Laboratories occurred which could reasonably have  caused the Adverse Analytical Finding, then ISA  shall have the burden to establish that such departure did not cause the Adverse Analytical Finding.14  11  [Comment to Article 3.1: This standard of proof required to be met by ISA is comparable to the standard which is applied in most countries to cases involving professional misconduct.]