Disease severity and prophylactic measures in patients with cutaneous lupus erythematosus: results of a worldwide questionnaire-based study - Samotij, Dominik; Szczęch, Justyna; Werth, Victoria P.; Furukawa, Fukumi; Kuhn, Annegret; Szepietowski, Jacek; Reich, Adam (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2018)