(Oxford University Press, 2019) Cruz-Jentoft, Alfonso J.; Bahat, Gülistan; Bauer, Jürgen; Boirie, Yves; Bruyère, Olivier; Cederholm, Tommy; Cooper, Cyrus; Landi, Francesco; Rolland, Yves; Sayer, Avan Aihie; Schneider, Stéphane M.; Sieber, Cornel C.; Topinkova, Eva; Vandewoude, Maurits; Visser, Marjolein; Zamboni, Mauro