Distinct Clinicopathological and Prognostic Features of Thin Nodular Primary Melanomas: An International Study from 17 Centers. - Dessinioti C; Dimou N; Geller AC; Stergiopoulou A; Lo S; Keim U; Gershenwald JE; Haydu LE; Ribero S; Quaglino P; Puig S; Malvehy J; et al. (Journal of the National Cancer Institute, 2019)