1 From the Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany.
2 Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
3 Division of Hand, Plastic, and Aesthetic Surgery, Ludwig-Maximilians-University Munich, Munich, Germany.
4 Department of Anatomy, Jagiellonian University Medical College, Kraków, Poland.
5 Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Trauma Center, Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany.
6 Instituto Ivo Pitanguy, Hospital Santa Casa de Misericórdia Rio de Janeiro, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil.
7 Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland.