Emma Hernandez-Sanabria, Vera Slomka, et al., In vitro Increased Respiratory Activity of Selected Oral Bacteria May Explain Competitive and Collaborative Interactions in the Oral Microbiome. Front Cell Infect Microbiol. 2017; 7: 235. Published online 2017 Jun 7. doi: 10.3389/fcimb.2017.00235.