Reopening borders: protocols for resuming travel during the COVID-19 pandemic - Nali, Luiz Henrique da Silva; Salvador, Felipe Scassi; Bonani, Graciela dos Santos Soares; Andrade Júnior, Heitor Franco de; Luna, Expedito Jossé de Albuquerque; Fujita, Dennis Minoru (Clinics, 2021)