5.6  Retired Athletes returning to Competition5.6.1  Athletes in the IBU RTP who have given notice of retirement to the IBU/BIU may not resume com-peting in International Events or National Events until they have given the IBU/BIU and their National Anti-Doping Organisation written notice of their intent to resume competing and have made themselves available for Testing for a period of six months before returning to competition, including (if requested) complying with the whereabouts requirements of Annex I to the International Standard for Testing and Investigations.