He also used modern , ergogenic doping aids , labeled doping use in a certain year ( DY ) in Figure 1 .
Armstrong 's victories can be seen as winning performances ( WP ) in Figure 1 .
Armstrong also used modern , ergogenic doping aids , labeled doping use in a certain year ( DY ) in Figure 1 .
Armstrong 's victories can be seen as winning performances ( WP ) in Figure 1 .