Unnikrishnan, R., Paul, G., Senan, S. K., & Vijayakumar, P. (2018). Prostate Specific Antigen Values of Geriatric Individuals Visiting a Tertiary Care Hospital in Southern India for Comprehensive Check Up. International Journal of Medical Science and Clinical Invention, 5(1), 3435–3438. https://doi.org/10.18535/ijmsci/v5i1.12