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  1. Deficiency Definition & Meaning - Merriam-Webster

  2. 8 Common Signs of Vitamin Deficiency, Plus How to Address Them - Healthline

  3. Vitamin deficiency anemia - Symptoms & causes - Mayo Clinic

  4. DEFICIENCY | English meaning - Cambridge Dictionary

  5. Vitamin D Deficiency: Causes, Symptoms & Treatment - Cleveland Clinic

  6. DEFICIENCY Definition & Meaning | Dictionary.com

  7. Iron deficiency anemia - Symptoms & causes - Mayo Clinic

  8. Vitamin Deficiency: Symptoms, Diagnosis, and Treatment

  9. Anemia - Symptoms and causes - Mayo Clinic

  10. Vitamin Deficiencies: Signs, Symptoms, and Causes - Healthgrades