A combination photo shows face transplant recipient Charla Nash, of Stamford, Connecticut, before (L) and after her injury, in these undated photographs released on June 10, 2011. Nash, who was mauled by a chimpanzee in 2009, has received a full face transplant, the third surgery of its kind performed in the United States, Boston's Brigham and Women's Hospital said on June 10, 2011.[Photo/Agencies]

Face transplant patient Dallas Wiens is seen before his transplant and after in this combination handout image released on May 9,2011[Photo/Agencies]