P268 Impact of the 2020 COVID-19 lockdown in Switzerland on physical activity in patients with early breast cancer under aromatase-inhibitor therapy. A subanalysis of the SAKK 95/17 WISE trial. (April 2023) - Hoefnagels, N.; Gautier, A.; Müller, A.; Schär, S.; Rosset, L.; Mahbiz, N. Corke; Schwitter, M.; Güth, U.; Jakob, A.; Balmelli-Cattelan, C.; Leo, C.; Fehr, M.; et al.