INNSBRUCK, AUSTRIA - FEBRUARY 24:   Doctor Wolfgang Koller attends a press conference to discuss the health of Prince Friso of Orange-Nassau at Innsbruck University Hospital on February 24, 2012 in Innsbruck, Austria. Prince Johan Friso, son of Queen Beatrix of the Netherlands, was injured in an avalanche a week ago and doctors have reported he is in a coma and may never regain consciousness. (Photo by Daniel Liebl/WireImage)