Fig. 3.

Network view of the first author affiliations of studies conducted in Africa on vitamin A deficiency during the last decade. Affiliations (n 112) of the first author for papers (n 72) indexed as the major MeSH term ‘vitamin A deficiency’ are included. The size of the node and connecting lines is relative to the number of connections. Affiliations based in Africa are in black, the ones outside Africa in white. 1=University of Washington, USA