1. Amin D, Nguyen N, Roser SM, Abramowicz S (2020) 3D printing of face shields during COVID-19 pandemic: a technical note. J Oral Maxillofac Surg 78(8):1275–1278
2. Armijo PR, Markin NW, Nguyen S, Ho DH, Horseman TS, Lisco SJ, et al (2020) 3D printing of face shields to meet the immediate need for PPE in an anesthesiology department during the COVID-19 pandemic. Am J Infect Control
3. Burki T (2020) Global shortage of personal protective equipment. Lancet Infect Dis 20(7):785–786
4. Cai M, Li H, Shen S, Wang Y, Yang Q (2018) Customized design and 3D printing of face seal for an N95 filtering facepiece respirator. J Occup Environ Hyg 15(3):226–234
5. Centres for Disease Control and Prevention (2019) Interim domestic guidance on the use of respirators to prevent transmission of SARS. Centres for Disease Control and Prevention, Atlanta, Georgia, USA. https://www.cdc.gov/sars/clinical/respirators.html