Further, theinformation provided must be credible and must comprisean important part of any case which is initiated or, if no caseis initiated, must have provided a sufficient basis on which acase could have been brought.Tampering: Altering for an improper purpose or in animproper way; bringing improper influence to bear;interfering improperly; obstructing, misleading or engagingin any fraudulent conduct to alter results or prevent normalprocedures from occurring; or providing fraudulentinformation to an Anti-Doping Organization .