@article{{MRA}{}, author = {Mei, Z., Grummer-Strawn, L.}, title = { The magnitude and distribution across countries of iron deficiency using serum/plasma ferritin}, journal = {Medical Research Archives}, volume = {7}, number = {12}, year = {2019}, doi = {10.18103/mra.v7i12.2027}, url = {https://esmed.org/MRA/mra/article/view/2027} }