11.   The operation will be performed using the very latest microsurgery techniques.

12.   The surgeon who performed the operation said it had gone well.

13.   You can sort these tables and even perform mathematical operations on them.

14.   The operation is performed under local anaesthetic, which lessens the chances of infection.

15.   Surgeons are performing operations in tents by torchlight.

16.   The operation was performed by a battery of doctors.

17.   These operations could be performed manually by the use of a dice.

18.   If repeated endoscopic attempts failed, emergency operation was performed.

19.   If oesophagitis is not relieved by conservative treatment, the operation should be performed before oesophageal function is severely damaged.

20.   The specified package has no active DCs and so QA operations cannot be performed.