Fig. 4
From: Insights into estrogen impact in oral health & microbiome in COVID-19
Oral cavity correlations network linkages. a premenopausal b postmenopausal, c Men. Pearson correlation coefficient shows if there exists a positive correlation (red line) or negative correlation (blue line) between variables. p value less or equal to 0.05 was considered significant and r = 0.4 cut off