Facial port wine stains in childhood: prediction of the rate of improvement as a function of the age of the patient, size and location of the port wine stain and the number of treatments with the pulsed dye (585nm) laser. - Nguyen,C.M.; Yohn,J.J.; Huff,J.C.; Weston,W.L.; Morelli,J.G. (Br J Dermatol, 1998)