Dr. Nitesh Anand. (2019). COMPARATIVE ESTIMATION OF LEVEL OF TNF- α IN GINGIVAL CREVICULAR FLUID AND BLOOD SERUM IN PATIENT WITH CHRONIC PERIODONTITIS BEFORE AND AFTER SCALING AND ROOT PLANING: A BIOCHEMICAL STUDY. International Journal of Medical Science And Diagnosis Research, 3(10). Retrieved from https://www.ijmsdr.com/index.php/ijmsdr/article/view/501