- https://www.analesdepediatria.org/es-infeccion-horizontal-por-sars-cov-2-tres-articulo-S1695403320304525
- https://www.analesdepediatria.org/en-horizontal-sars-cov-2-infection-in-three-articulo-S2341287922000011
- https://www.analesdepediatria.org/es-pdf-S1695403320304525
- https://www.analesdepediatria.org/en-pdf-S2341287922000011