[1] Tech Univ Munich, Klinikum Rechts Isar, Dept Plast & Hand Surg, Munich, Germany
[2] Inst Regenerat Cures, Davis, CA USA
[3] Calif State Univ Sacramento, Sacramento, CA 95819 USA
[4] Mt Vernon Hosp, RAFT Inst Plast Surg, Northwood HA6 2RN, Middx, England