Proceedings of the 12th International Joint Conference on Biomedical Engineering Systems and Technologies Volume 1: BIODEVICES Acronym: BIODEVICES 2019/BIOSTEC Event held on: February 22-24, 2019, in Prague, Czech Republic Editors: Ana Roque 1 , Ana Fred 2 and Hugo Gamboa 3 Affiliations: 1 UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Portugal , 2 Instituto de Telecomunicações and Instituto Superior Técnico - Lisbon University, Portugal , 3 LIBPHYS-UNL / FCT - New University of Lisbon, Portugal Vol. 1 - 978-989-758-353-7 Vol. 2 - 978-989-758-353-7 Vol. 3 - 978-989-758-353-7 Vol. 4 - 978-989-758-353-7 Vol. 5 - 978-989-758-353-7