Machine Learning and IoT Applied to Cardiovascular Diseases Identification through Heart Sounds: A Literature Review. - Brites, Ivo Sérgio Guimarães; da Silva, Lídia Martins; Barbosa, Jorge Luis Victória; Rigo, Sandro José; Correia, Sérgio Duarte; Leithardt, Valderi Reis Quietinho (Informatics, 2021)