[1] Univ Coll Cork, Dept Plast Surg, Canc Res UCC, Western Gateway Bldg, Cork, Ireland
[2] IGEA Biophys Lab, Carpi, MO, Italy
[3] Univ Pavia, IRCCS Policlin San Matteo Fdn, Dept Otolaryngol Head Neck Surg, Pavia, Italy
[4] Univ Roma La Sapienza, Dept Internal Med & Med Specialties, Div Dermatol, Policlin Umberto I, Rome, Italy
[5] St Georges Univ Hosp NHS Trust, Dept Plast Surg, London, England
[6] Univ Padua, Dept Surg Ontol & Gastroenterol Sci DISCOG, Padua, Italy
[7] Ludwig Maximilian Univ Munich, Dept Dermatol & Allergol, Munich, Germany
[8] Artemed Fachklin Munich, Dept Dermatol Surg & Dermatol, Munich, Germany
[9] James Cook Univ Hosp, Middlesbrough, Cleveland, England
[10] Univ Turin, Dermatol Clin, Dept Med Sci, Turin, Italy
[11] Inst Oncol Ljubljana, Dept Expt Oncol, Zaloska 2, Ljubljana, Slovenia
[12] Merseyside Plast Surg Ctr, Liverpool, Merseyside, England
[13] Royal London Hosp, Dept Cutaneous Med & Surg, London, England
[14] QMUL, Barts Hlth NHS Trust, Skin Canc SSMDT, London, England
[15] North Bristol NHS Trust, Dept Plast & Reconstruct Surg, Southmead Hosp, Bristol, Avon, England
[16] UCL, Dept Surg & Intervent Sci, Royal Free Campus, London, England
[17] Univ Szeged, Dept Dermatol & Allergol, Szeged, Hungary
[18] Queen Elizabeth Univ Hosp, Maxillofacial Unit, Glasgow, Lanark, Scotland
[19] Univ Frauenklin, Tubingen, Germany
[20] Hull Univ Teaching Hosp NHS Trust, Kingston Upon Hull, N Humberside, England
[21] Christie Hosp, Manchester, Lancs, England
[22] Ruhr Univ Bochum, Dept Dermatol Venerol & Allergol, St Josef Hosp, Bochum, Germany
[23] Univ Genoa, Osped Policlin San Martino, Clin Chirurg 1, Genoa, Italy
[24] Dept Gen Surg, Mirano, Italy
[25] Univ Piemonte Orientale, Dermatol Clin, Novara, Italy
[26] Univ Hosp Pisa, ENT Unit, Pisa, Italy
[27] Johannes Gutenberg Univ Mainz, Dept Dermatol, Mainz, Germany
[28] Univ Turin, Dept Surg Sci, Otolaryngol Clin, Turin, Italy
[29] Guys & St Thomas Hosp, Dept Plast Surg, London, England
[30] Queen Victoria Hosp NHS Fdn Trust, Clin Head & Neck Canc, E Grinstead, W Sussex, England
[31] Univ Copenhagen, Herlev & Gentofte Hosp, Dept Oncol, Herlev, Denmark
[32] Univ Copenhagen, Fac Hlth & Med Sci, Dept Clin Med, Copenhagen, Denmark
[33] Zealand Univ Hosp, Dept Clin Oncol & Palliat Care, Roskilde, Denmark