Unnikrishnan, Rahul, George Paul, Sunil K Senan, and Priya Vijayakumar. 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):3435-38. https://doi.org/10.18535/ijmsci/v5i1.12.