@misc{miscd3566959,
title   = {Propolis: a natural product to treat recurrent aphthous ulcers},
author = {Lotufo, Mônica Andrade and Birman, Esther Goldenberg and Schimizu, M T and Cardoso, Paulo Eduardo Capel},
year = {2000},
booktitle   = {Annual Meeting of Brazilian Society for Dental Research of IADR}
}