11.   A month after his injury, surgeons performed a spinal fusion, using a piece of his hipbone to repair his damaged neck.

12.   But in total, Russian surgeons perform far fewer bypass operations, particularly the complex ones, than do surgeons in many other countries.

13.   Come to Srebrenica, where a heroic surgeon performed operations without anesthesia because Serbs had deprived the town of medicine.

14.   Dragana was lying in a hospital bed when she was wounded, recovering from a cancer operation which surgeons had performed only a few hours earlier.

15.   Eventually, virtual-reality techniques might enable surgeons to perform operations by long distance using a robotic surgeon.

16.   Every year, surgeons perform transplants using kidneys from cadavers and from living, related donors, such as siblings or parents.

17.   For years, surgeons have been performing stomach-reduction surgery on patients unable to lose weight by other means.

18.   He or she can check the Internet to see how a car performs, but not how his or her heart surgeon performs.

19.   He proved that conclusively some years ago when surgeons performed a by-pass operation on his ticker.

20.   Surgeons performed a hysterectomy on her and later removed part of one of her lungs.