Comparison of oral psoralen-UV-A with a portable tanning unit at home vs hospital-administered bath psoralen-UV-A in patients with chronic hand eczema. - Van Coevorden,A.M.; Kamphof,W.G.; van Sonderen,E.; Bruynzeel,D.P.; Coenraads,P.J. (Arch Dermatol, 2004)