BERLIN (AP) — Former rider Erik Zabel resigned Monday as a member of an International Cycling Union advisory panel after telling a German newspaper he used the blood-booster EPO, cortisone and other banned substances during several years of his career.

Zabel, who won 12 Tour de France stages and earned the sprinter's green jersey six times, retired in 2008. The year beforehand, the German said he briefly used EPO in 1996.

In Monday's edition of Germany daily Sueddeutsche Zeitung, Zabel said that was only "a small part of the truth" and that he instead engaged in doping for "many years."

Zabel was quoted as saying that he never had a "structured doping plan." But he added: "If you take it all together now — EPO, cortisone, then even blood doping — it's a whole lot." Last week, Zabel was mentioned in a French senate report to fight doping in sport as having tested positive for EPO at the 1998 Tour.

He offered his resignation from the sport's Professional Cycling Council to UCI President Pat McQuaid.

Zabel was among five UCI nominees to the 13-member panel, which also includes 1987 Tour winner Stephen Roche and Tour organizing chief Christian Prudhomme.

The UCI said in a statement that Zabel expressed "deep regret for having lied for so long about taking performance-enhancing substances."