Jain, Dr. Preeti, Dr. Roopam Jain, Dr. Anupam Kumar Jain, Dr. Manisha Jindal, and Dr. R. Dixit. 2012. “Aging and Its Theories: Aging and Its Theories”. National Journal of Integrated Research in Medicine 3 (2):170-73. https://doi.org/10.70284/njirm.v3i2.292.