Maintenance of skin clearance with ixekizumab treatment of psoriasis: Three-year results from the UNCOVER-3 study. - Leonardi C; Maari C; Philipp S; Goldblum O; Zhang L; Burkhardt N; Ball S; Mallbris L; Gonzalez P; Fernández-Peñas P; Puig L (Journal of the American Academy of Dermatology, 2018)