Marte Eva Koelemaij, John David Francis Hale, & Rohit Jain. (2021). Efficacy Of Oral Probiotic Streptococcus Salivarius K12 In The Prevention Of Halitosis (Bad Breath): A Systematic Review. International Journal of Pharma and Bio Sciences, 12(4), 27–34. https://doi.org/10.22376/ijpbs.2021.12.2.b27-34