1. Regenerative Biomedicine Group, Blond McIndoe Research Laboratories, The University of Manchester, Manchester, United Kingdom.
2. Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Lausanne, Lausanne, Switzerland.
3. Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Basel, Basel, Switzerland.
4. Section for Anatomy, Department of Integrative Medical Biology, Umeå University, Umeå, Sweden.