All AASV ESPHM International Congress International Summit International Symposium IPVS Virtual Conference ESPHM 2020+1 Bern Apr 14 Apr 16 WAFL 2020 postponed to 2021 Aug 16 Aug 19 SEGES Summit 2020 postponed to 2021 Sep 23 Sep 24 IPVS 2020 Rio De Janeiro Brazil postponed to June 2022 Jun 01 Jun 30