Bethanechol used to prevent salivary gland dysfunction in patients submitted to radioactive iodine therapy: a double blind, placebo controlled, randomized study - Campanhã, Daniel; Lima, Eduardo Nóbrega Pereira; Alves, Fábio Abreu; Jaguar, Graziella Chagas (Journal of Stomatology, Oral and Maxillofacial Surgery, 2021)