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Contributors AP is the Director of the Dermatology Unit Service at Sant’Orsola-Malpighi Hospital in Bologna and Clinical Professor in Dermatology at Bologna University. IN is the Medical Director of the Pediatric Dermatology Outpatient Service. AS, MAC, ML and AV are residents in dermatology at Bologna University.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.