Sol-Gel Derived Mg-Based Ceramic Scaffolds Doped with Zinc or Copper Ions: Preliminary Results on Their Synthesis, Characterization, and Biocompatibility oleh Georgios S. Theodorou, Eleana Kontonasaki, Anna Theocharidou, Athina Bakopoulou, Maria Bousnaki, Christina Hadjichristou, Eleni Papachristou, Lambrini Papadopoulou, Nikolaos A. Kantiranis, Konstantinos Chrissafis, Konstantinos M. Paraskevopoulos, Petros T. Koidis