<qa>  What is the dose of 8-methoxypsoralen in a dose ofIntake of 8-methoxypsoralen in a dose of 0.6 mgkg 1 hour before UVA irradiation or, in case of 8-methoxypsoralen intolerance, 5-methoxypsoralen in a dose of 1.2 mgkg 2 hours before UVA irradiation. 