US face transplant gives man new jaw, teeth and tongue
Doctors have carried out what they say is the most extensive face transplant ever performed.
The operation at the University of Maryland gave Richard Norris a new face, including jaw, teeth and tongue.
The 37-year-old has lived as a recluse for 15 years after being severely injured in a gun accident, and wore a mask whenever he went outside.
Tamsin Smith reports.