Sebastian ChristophDepartment of Dermatology, Inselspital, University of Bern, Switzerland, Simone CazzanigaDepartment of Dermatology, Inselspital, University of Bern, Switzerland; Centro Studi GISED, Presidio Ospedaliero Matteo Rota, Bergamo, Italy, Robert Emil HungerDepartment of Dermatology, Inselspital, University of Bern, Switzerland, Luigi NaldiCentro Studi GISED, Presidio Ospedaliero Matteo Rota, Bergamo, Italy; Department of Dermatology, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy, Luca BorradoriDepartment of Dermatology, Inselspital, University of Bern, Switzerland, Patrick Antony Oberholzerpatrick.oberholzer@insel.chDepartment of Dermatology, Inselspital, University of Bern, Switzerland

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