Clinical Image-Based Procedures, Distributed and Collaborative Learning, Artificial Intelligence for Combating COVID-19 and Secure and Privacy-Preserving Machine Learning : 10th Workshop, CLIP 2021, Second Workshop, DCL 2021, First Workshop, LL-COVID19 2 - Oyarzun Laura, Cristina; Cardoso, M. Jorge; Chen, Yufei; Drechsler, Klaus; Erdt, Marius; Kaissis, Georgios; Linguraru, Marius George; Rosen-Zvi, Michal; Shekhar, Raj; Wesarg, Stefan (Cham Springer International Publishing AG, 2021)