Events / Calendar of Events Calendar of Events Annual Meeting International Activity ASD Activity Important date 2028 2027 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 , April Sun. Mon. Tues. Wed. Thur. Fri. Sat. 1234567891011121314151617Dia-Klink18192021222324Histiocytosis: concept and uncommon presentations252627282930Mini symposium of ADS and ASD