One reason for the drop in positive results is a significant increase in testing in the lead up to major events. The International Testing Agency confirmed that 92% of participants were tested at least once in the six months before Milan-Cortina began, with director general Benjamin Cohen describing it as "our most extensive program ever implemented". The pre-Games testing did also find one alleged positive result. Italian biathlete Rebecca Passler was provisionally suspended by her country's anti-doping agency after testing positive for "Letrozole metabolite bis, methanol" on 2 February - just four days before the Games started. Letrozole is a drug used to lower oestrogen levels and is frequently used to treat breast cancer. Passler appealed against the suspension and was cleared to compete in the Games. Wada said the decision was provisional, with a hearing to be established by Italy's anti-doping agency (Nado) at a later date. "We used to test athletes only when they reach the Olympic Games.…