Khoshbakht, Z. et al. 2019. Evaluation of Herbal Mouthwashes Containing Zataria Multiflora Boiss, Frankincense and Combination Therapy on Patients with Gingivitis: A Double-Blind, Randomized, Controlled, Clinical Trial: . Galen Medical Journal. 8, (Jul. 2019), e1366. DOI:https://doi.org/10.31661/gmj.v8i.1366.