References:

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1. World Health Organization statistics :
   https://www.who.int/news-room/fact-sheets/detail/the-top-10-causes-of-death

2. Exploring the Role and Function of the Kidneys: ​https://guides.hsict.library.utoronto.ca/RK

3. Noted Anatomist: https://www.thenotedanatomist.com​

4. RAAS system - https://www.britannica.com/science/renin-angiotensin-system

5. Renal vascular structure and rarefaction: https://pmc.ncbi.nlm.nih.gov/articles/PMC3936257/#S1​