Assessment of the efficacy and safety of tocilizumab in patients over 80 years old with giant cell arteritis oleh Hubert de Boysson, Maelle Le Besnerais, Félix Blaison, Aurélie Daumas, Pierre-André Jarrot, François Perrin, Nathalie Tieulié, Alexandre Maria, Pierre Duffau, Bruno Gombert, Maxime Samson, Olivier Espitia, Marc Lambert, Arsène Mékinian, Achille Aouba, for the French Study Group for Large Vessel Vasculitis (GEFA)