Leipheimer officially, unceremoniously, retired from pro cycling in May 2013.

"Everything I did in 16 years of pro cycling is a gift."

He retired from pro cycling after 2009, unable to find a new team, and started a new career as an insurance adviser.

Armstrong announced on September 9, 2008, that he would return to pro cycling with the express goal of participating in the 2009 Tour de France.

He had plans to return to pro cycling in the middle of 2009, but was unable to find a team at that time.

The infamous "pot belge" or "Belgian mix" has a decades-long history in pro cycling, among both riders and support staff.

Now he is on the verge of his first major athletic competition since retiring from pro cycling last year.

"After the Olympics, I went into pro cycling," Heiden explained.

The scope of the study will have been defined as such so is always likely to be very pro cycling.

When considering the cancer issue it's a good idea to consider the amount of cases of testicular cancer that occur in pro cycling.