By Helsing Per   Frøen Hege   in Acta Dermato-Venereologica

ISSN:0001-5555|87|2|163-165

Medical Journals Limited‎(2007)‎

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By Helsing Per   Høyheim Bjørn   in Acta Dermato-Venereologica

ISSN:0001-5555|81|1|68-69

Medical Journals Limited‎(2001)‎

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By Helsing Per   Nielsen Erik W.   in Acta Dermato-Venereologica

ISSN:0001-5555|86|3|273-274

Medical Journals Limited‎(2006)‎

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By Helsing Per   Mørk Gro   Sveen Britt   in Acta Dermato-Venereologica

ISSN:0001-5555|86|3|235-237

Medical Journals Limited‎(2006)‎

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By Sitek Jan Cezary   Tangeraas Trine   Bjerre Anna   Helsing Per   in Acta Dermato-Venereologica

ISSN:0001-5555|94|4|421-424

Medical Journals Limited‎(2014)‎

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By Mantaka Panagiota   Helsing Per   Gjersvik Petter   Bassarova Assia   Clausen Ole Petter F.   Delabie Jan   in Acta Dermato-Venereologica

ISSN:0001-5555|93|3|325-329

Medical Journals Limited‎(2013)‎

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By Granlund Håkan   Erkko Pekka   Remitz Anita   Langeland Tor   Helsing Per   Nuutinen Marja   Reitamo Sakari   in Acta Dermato-Venereologica

ISSN:0001-5555|81|1|22-27

Medical Journals Limited‎(2001)‎

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