Delavarifar, Somayeh, et al. “Low Level Laser Irradiation Effects on Proliferation and Apoptosis in Bone Marrow Mesenchymal Stem Cells”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 26, no. 1, Mar. 2016, pp. 72-84, https://gssrr.org/JournalOfBasicAndApplied/article/view/5441.