Correlation between increased flushing intervals and malfunction and infectious complications in fully implantable catheters during the COVID-19 pandemic - Esteves, Alexandre de Oliveira; Figueiredo, Vitor Lauar Pimenta de; Saes, Glauco Fernandes; Zerati, Antonio Eduardo; Leão, Pedro Puech; Wolosker, Nelson; Luccia, Nelson de (EINSTEIN-SAO PAULO, 2025)