Overview of BioASQ Tasks 9a, 9b and Synergy in CLEF2021

Nentidis, A., G. Katsimpras, E. Vandorou, A. Krithara, and G. Paliouras, "Overview of BioASQ Tasks 9a, 9b and Synergy in CLEF2021", Proceedings of the 9th BioASQ Workshop A challenge on large-scale biomedical semantic indexing and question answering, 2021.