Serum levels of folate, 25-hydroxyvitamin D3 and cobalamin during UVB phototherapy: findings in a large prospective trial.
Benedikt WeberR MarculescuS RadakovicA TanewPublished in: Journal of the European Academy of Dermatology and Venereology : JEADV (2019)
A standard course of NB-UVB induces a small but significant decrease of serum folate and cobalamin levels.