“Effect of Drug-Induced Pathomorphosis on Oral Cavity Organs and Tissues in Chronic Obstructive Pulmonary Disease Combined With Coronary Heart Disease: A Clinical Case”. Biomedical Research and Therapy, vol. 8, no. 1, Jan. 2021, pp. 4197-02, https://doi.org/10.15419/bmrat.v8i1.657.