Session 2 (Paris, 16-18 March 2015)	2	2015-03-16
Session 3 (Washington, DC, 1-3 June 2015)	3	2015-06-01
Session 4 (Changchun, 16-18 September 2015)	4	2015-09-16
Session 5 (Teleconference, 27 November 2015)	5	2015-11-27