References:
- Vitamin B12 Deficiency - (http://www.aafp.org/afp/2003/0301/p979.html)
- Micronutrients and Macronutrients - (https://www.unicef.org/nutrition/training/2.1/5.html)
- What Are the Signs and Symptoms of Pernicious Anemia? - (https://www.nhlbi.nih.gov/health/health-topics/topics/prnanmia/signs)
- Vitamin B12 - (http://www.mayoclinic.org/drugs-supplements/vitamin-b12/dosing/HRB-20060243)
Editor: Suchitra Chari
Technically Checked by: Lingaraj
