1. Banco de Preguntas Preevid. Eficacia de las mascarillas filtrantes N95 frente a las FFP2 Murciasalud [Consultado 25 Mar 2020] Disponible en http://www.murciasalud.es/preevid/23536 2020
2. Centers for Disease Control and Prevention. Release of Stockpiled N95 Filtering Facepiece Respirators Beyond the Manufacturer-Designated Shelf Life: Considerations for the COVID-19 Response [Consultado 25 marzo 2020] Disponible en: https://www.cdc.gov/coronavirus/2019-ncov/hcp/release-stockpiled-N95.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2F2019-ncov%2Frelease-stockpiled-N95.html
3. Centers for Disease Control and Prevention. Strategies for Optimizing the Supply of N95 Respirators [Consultado 26 Mar 2020] Disponible en: https://www.cdc.gov/coronavirus/2019-ncov/hcp/respirators-strategy/index.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2F2019-ncov%2Fhcp%2Frespirators-strategy%2Fcrisis-alternate-strategies.html
4. Centers for Disease Control and Prevention. Recommended Guidance for Extended Use and Limited Reuse of N95 Filtering Facepiece Respirators in Healthcare Settings [Consultado 25 marzo 2020] Disponible en: https://www.cdc.gov/niosh/topics/hcwcontrols/recommendedguidanceextuse.html#ref19
5. World Health Organization. Rational use of personal protective equipment for coronavirus disease (COVID-19): interim guidance [Consultado 27 marzo 2020] Disponible en: https://apps.who.int/iris/bitstream/handle/10665/331215/WHO-2019-nCov-IPCPPE_use-2020.1-eng.pdf