Mirhashemi, Amirhossein, et al. “Efficacy of Photobiomodulation Therapy for Orthodontic Pain Control Following the Placement of Elastomeric Separators: A Randomized Clinical Trial”. Journal of Lasers in Medical Sciences, vol. 12, Feb. 2021, p. e8, https://journals.sbmu.ac.ir/jlms/article/view/30450.