6.0 Processing Personal Information in Accordance with a V alid Legal Ground  6.1 Anti-Doping Organizations shall only Process  Personal Information  in accordance with a valid legal ground, which can include:  a) Compliance with legal obligations, performance of a public interest task, where necessary for reasons of substantial public interest, public health, or fulfillment of a contract, or to protect the vital interests of the Participant and other Persons ; or b) Where permitted, consent of a Participant or other Person , which shall be informed, freely given, specific and unambiguous, subject to the exceptions in Article 6.2.b, 6.3 and 6.4 of this International Standard.