Daylight-mediated photodynamic therapy of moderate to thick actinic keratoses of the face and scalp: A randomized multicentre study

S.R. Wiegell, S. Fabricius, P.A. Philipsen, J. Heydenreich, M. Hædersdal, H.C. Wulf, M. Gniadecka, I.M. Stender, B. Berne, S. Kroon, B.L. Andersen, C. Mørk, C. Sandberg, K.S. Ibler, G.B.E. Jemec, K.M. Brocks