Martins, M. D., Fernandes, K. P. S., Pavesi, V. C., França, C. M., Ferrari, R. A. M., & Bussadori, S. K. (2015). Healing properties of papain-based gel on oral ulcers. Brazilian Journal of Oral Sciences, 10(2), 120–123. https://doi.org/10.20396/bjos.v10i2.8641651