Jain, D.P., Jain, D.R., Jain, D.A.K., Jindal, D.M. and Dixit, D.R. 2012. Aging and Its Theories: Aging and Its Theories. National Journal of Integrated Research in Medicine. 3, 2 (Jun. 2012), 170–173. DOI:https://doi.org/10.70284/njirm.v3i2.292.