109
Participants
Start Date
January 31, 2003
Primary Completion Date
May 31, 2006
Study Completion Date
January 31, 2007
UVB phototherapy
Group 1: every irradiation an increase of 40%, starting with 70% of the minimal erythema dose
UVB phototherapy
Group 2: every irradiation an increase of 20%, starting with 30% of the minimal erythema dose
Radboud University Nijmegen Medical Centre, Department of Dermatology, Nijmegen
Radboud University Medical Center
OTHER