ETFAD/EADV Eczema task force 2020 position paper on diagnosis and treatment of atopic dermatitis in adults and children - Wollenberg, A; Christen-Zäch, S; Taieb, A; European Task Force on Atopic Dermatitis/EADV Eczema Task Force (J Eur Acad Dermatol Venereol, 2020)