Adherence and Efficacy of Olfactory Training as a Treatment for Persistent Olfactory Loss - Fornazieri, Marco Aurelio; Garcia, Ellen Cristine Duarte; Lopes, Natalia Medeiros Dias; Miyazawa, Isabela Naomi Iha; Silva, Gislene dos Santos; Monteiro, Rebeca dos Santos; Pinna, Fabio de Rezende; Voegels, Richard Louis; Doty, Richard L (American journal of rhinology & allergy, 2020)