title: The Mystery of the Christmas Tree.
authors.affiliation: Retired.
authors.forename: Walter H C
authors.initials: WH
authors.lastname: Burgdorf
authors.affiliation: Department of Dermatology, University of Munich, Munich, Germany.
authors.forename: Gerd
authors.initials: G
authors.lastname: Plewig
authors.affiliation: Université de Strasbourg and Clinique Dermatologique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
authors.forename: Dan
authors.initials: D
authors.lastname: Lipsker
authors.affiliation: private practice.
authors.forename: Leonard J
authors.initials: LJ
authors.lastname: Hoenig
mesh_terms: D003880:Dermatology / Q000266:history*; D004850:Eponyms; D005602:France; D049672:History, 19th Century; D049673:History, 20th Century; D006693:Holidays; D006801:Humans; D017515:Pityriasis Rosea / Q000175:diagnosis / Q000266:history*; D009626:Terminology as Topic