1) Rodgers, B., Kirley, K., & Mounsey, A. (2013). PURLs: prescribing an antibiotic? Pair it with probiotics. The Journal of family practice, 62(3), 148–150.
2) Heta, S., & Robo, I. (2018). The Side Effects of the Most Commonly Used Group of Antibiotics in Periodontal Treatments. Medical sciences (Basel, Switzerland), 6(1), 6.
3) Willing, C. P. et al. Shifting the balance: antibiotic effects on host-microbiota mutualism. Nat. Rev. Microbiol. 9, 233–243 (2011).