1. Strategies to Optimize the Supply of PPE and Equipment: https://www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/index.html.
2. Stakeholders for Non-NIOSH-Approved Imported FFRs: https://www.fda.gov/media/136403/download.
3. Letter to Makers: https://docs.google.com/document/d/1hByzyVXLEkXx3vn3L7-LsOTyFmbpaXexzX3VFVKn9zw/mobilebasic?fbclid=IwAR2w9yUV2EuAcMRTSK1DV25y5kNLN3IaPYpnn2Jr8jXtBDJzx6ICx9fN9PA.
4. Powered air-purifying respirators (PAPRs) help doctors and nurses treat coronavirus patients: https://www.imperial.ac.uk/song-group/respirators-for-covid19/.
5. Considerations for Optimizing the Supply of Powered Air-Purifying Respirators (PAPRs): https://www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/powered-air-purifying-respirators-strategy.html.