Ferreira, Fernando, Daniela Alves, Telma Oliveira, Silvia Coelho, Inês Oliveira, and Paula de Melo Alves. “Evaluation of Saliva As an Alternative to Standard Collection for Detection of SARS-CoV-2”. Scientific Letters 1, no. 1 (May 26, 2023): 3. Accessed May 8, 2024. https://publicacoes.cespu.pt/index.php/sl/article/view/20.