26 initially selected: two not retrieved; one was qualitative, one was published and is included in the published literature.
 Need assessments and surveys alone were excluded.
 The level of quality of studies was assessed for category A and B papers (77 out of 100).
 Including two prospective cohorts, and one study using both retrospective and prospective cohorts.
 Micro-nutrient deficiency category includes: two studies on Vitamin B3, one on Vitamin B1, one on vitamin C, one on iodine and one on multiple micronutrients (Iron, Vit A, Thiamin, Zinc). Anaemia is excluded from this category
 Included in “multiple” and “anaemia and under-nutrition7” categories. Under-nutrition in this case includes acute and chronic malnturition, underweight (no micronutrient deficiencies)
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