The riders and horses undergo rigorous training, including how to deal with the public in a variety of situations such as huge crowds of Olympic fans.

VOA: standard.2010.02.25

Petcoff and other older patients do not always undergo chemotherapy after colon cancer surgery.

VOA: standard.2010.03.18

Some passengers who were among the first to undergo increased screening said they faced extensive searches in Paris, but shorter delays at Dulles Internatonal Airport outside of Washington.

VOA: standard.2010.01.05

An Army spokesman says all the casualties took place at the base's Soldier Readiness Center, where soldiers who are about to be deployed or who are returning undergo medical screening.

VOA: standard.2009.11.05

"What we found is that live donation is very safe, the risk of dying from donating a kidney is 3 in 10,000 which is much lower than the risk of almost any other operation that you can undergo."

VOA: standard.2010.03.11