Session 21 (Geneva, 21-22 January 2019)	21	2019-01-21
Session 22 (Brussels, 4-5 March 2019)	22	2019-03-04
Session 23 (Garching, 8-9 May 2019)	23	2019-05-08
Session 24 (Web conference, 11 June 2019)	24	2019-06-11
Session 25 (Geneva, 9 September 2019)	25	2019-09-09