title: Diagnostic phototesting in polymorphous light eruption: the optimal number of irradiations.
authors.forename: I J
authors.initials: IJ
authors.lastname: Schornagel
authors.forename: E F
authors.initials: EF
authors.lastname: Knol
authors.forename: H
authors.initials: H
authors.lastname: van Weelden
authors.forename: C L H
authors.initials: CL
authors.lastname: Guikers
authors.forename: C A F M
authors.initials: CA
authors.lastname: Bruijnzeel-Koomen
authors.forename: V
authors.initials: V
authors.lastname: Sigurdsson
mesh_terms: D006801:Humans; D010787:Photosensitivity Disorders / Q000175:diagnosis*; D011446:Prospective Studies; D011829:Radiation Dosage; D012189:Retrospective Studies; D012882:Skin Tests / Q000379:methods; D014466:Ultraviolet Rays