Iodine, Zinc, Iron and Vitamin A: study protocols
3 study groups took Iodine together with Zinc, Iron and Vitamin A. These are the doses the studies gave. They are not a recommendation.
Fewer than 5 study groups in one unit match, too few to draw the chart.
Commonly used together
2 of 3 study groups took Iodine, Zinc, Iron and Vitamin A with something else, but nothing that 3 or more different studies gave.
3 study groups