Angral, A. ., Kaushal, S. ., Kaur, G. ., & Dhindsa, A. . (2021). periodontitis- as a risk factor for pulmonary diseases: periodontitis- as a risk factor for pulmonary diseases. International Journal of Medical Science And Diagnosis Research, 5(8). https://doi.org/10.32553/ijmsdr.v5i8.838