European expert consensus statement on the systemic treatment of alopecia areata.
Rudnicka L, Arenbergerova M, Grimalt R, Ioannides D, Katoulis AC, Lazaridou E, Olszewska M, Ovcharenko YS, Piraccini BM, Prohic A, Rakowska A, Reygagne P, Richard MA, Soares RO, Starace M, Vañó-Galvan S, Waskiel-Burnat A.