In Iron fortified foods nutrients don't naturally occur they are added. Food fortification with Iron powders is recommneded by WHO.
A Guide To Iron-Rich Foods To Fight Deficiency & Anemia
A Guide to Getting Iron Rich Foods Into Your Baby's or Toddler's Diet - Earth's Best Organic Infant and Toddler Foods
Health Benefits of Organic Iron-Fortified Baby Cereal
Food fortification
Full article: Iron supplementation and iron-fortified foods: a review
The development of a novel ferric phytate compound for iron fortification of bouillons (part I)
Does my bottle-fed baby need a formula with iron?
HOW HIGH PURITY IRON PLAYS A VITAL ROLE IN THE FOOD INDUSTRY
Frontiers Microencapsulated iron in food, techniques, coating material, efficiency, and sensory analysis: a review
Investigation of natural food fortificants for improving various properties of fortified foods: A review - ScienceDirect
50 Iron-Rich Foods for Babies, Toddlers & Kids - Kids Eat in Color
15 Best Iron Rich Foods for Elderly - The Geriatric Dietitian
Carbonyl Iron Powder suppliers in India- IMP, by Impindia
Why Iron Powders best for Iron fortification of foods?