Former German pro and current Garmin-Sharp director Andreas Klier has admitted using performance enhancing substances during part of his seventeen year career, with his confession coinciding with the announcement of a six month suspension by USADA.

http://www.velonation.com/News/ID/15241/Klier-admits-usage-of-doping-products-during-his-pro-career-loses-results-from-2005-onwards.aspx#ixzz2c5oUwtxY