karthikeyan Bangalore Varadhan, M. Shanmukha Venkata Nagarjuna, P. Munivenkatappa Lakshmaiah Venkatesh, S. Jyothsna N, S. Bhardwaj, and R. Murahari, “Stress reduction intervention and the initial periodontal therapy outcome in chronic periodontitis patients. a randomized controlled pilot study”, IJDR, vol. 7, no. 2, pp. 23–31, Sep. 2019, doi: 10.14419/ijdr.v7i2.29595.