Overlap between Vision 2020 pillars, health systems building blocks and Ouagadougou key areas. Areas of overlap between the three pillars of the Vision 2020 initiative, [41,62] and the six WHO health system building blocks,  and the nine key areas of Ouagadougou Declaration . See online Additional file 1.
du Toit et al. BMC Health Services Research 2013 13:102 doi:10.1186/1472-6963-13-102