1. https://www.who.int/health-topics/diabetes.
2. https://www.medicalnewstoday.com/articles/325018#how-is-the-pancreas-linked-with-diabetes.
3. https://www.webmd.com/diabetes/diabetes-causes.
4. https://www.mayoclinic.org/diseases-conditions/prediabetes/diagnosis-treatment/drc-20355284.
5. https://www.niddk.nih.gov/healthinformation/diabetes/overview/symptoms-causes.