@article{{MRA}{}, author = {Martin, G., Fidalgo, A., Prada, R., Carvajal, R., Linares-Fernández, V., González-Nieto, C., Ferrero, M., Campo-Ramos, R., Cos tales, I.}, title = { Guthrie Cards: Exploring Their Use for Nasopharyngeal Sample Storage}, journal = {Medical Research Archives}, volume = {11}, number = {8}, year = {2023}, doi = {10.18103/mra.v11i8.4111}, url = {https://esmed.org/MRA/mra/article/view/4111} }