1 Department of Head, Neck and Reconstructive Plastic Surgery, Örebro University Hospital, Örebro, Sweden; School of Medical Sciences, Örebro University, Örebro, Sweden. Electronic address: [email protected].
2 The Royal London Hospital, Barts Health NHS Trust, London, UK.
3 School of Medical Sciences, Örebro University, Örebro, Sweden.
4 Kellogg College, University of Oxford. Oxford, United Kingdom; Division of Plastic Surgery, Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States of America.