"While composite tissue allotransplantation (face, hands and other body parts) presents a promising field, there are still many unanswered questions and I believe once the facts on Ms. Nash's case comes out, the Cleveland Clinic's decisions will most likely be supported…" Song said.
Cendales said other centers will likely be strict as well.
"Currently, these types of transplants are under investigation and therefore are experimental, she said. "Any reputable program would have strict criteria for selecting candidates."
The Associated Press contributed to this article