7-9 Feb 2012	GRB | Session 55
13-16 Mar 2012	WP.29 | Session 156
26-29 Mar 2012	GRE | Session 67
16-20 Apr 2012	GRSG | Session 102
26-29 Jun 2012	WP.29 | Session 157
3-5 Sep 2012	GRB | Session 56
28 Sep-5 May 2015	HDH | HDH Informal Group General Files
13-16 Nov 2012	WP.29 | Session 158
11-14 Dec 2012	GRSP | Session 52