91.   They said they believed it was the first time that doctors had performed an organ transplant with the intention of stopping anti-rejection therapy.

92.   To verify the finding, the doctor can perform arteriography, injecting a dye and taking an X-ray photograph of the artery as the dye passes through it.

93.   To be safe, doctors perform biopsies, removing tissue from the breast to see if it is cancerous.

94.   To save his life, doctors performed an emergency tracheotomy.

95.   We had yet another sonogram, performed by doctors with extensive expertise in ultrasound diagnosis.

96.   When a lump was discovered during a regular annual checkup, her doctor performed a needle biopsy.

97.   When doctors do perform an episiotomy, they have a choice of two kinds of cuts.

98.   Woodfill said the court-appointed doctors will not perform an official test to determine whether Martin is brain-dead.

99.   With no order against resuscitation, doctors performed cardiopulmonary resuscitation and revived him.