How to Produce Cheap and Easy Custom-Made Sterilizable Filtering Facepiece 2/3 Masks for Healthcare Providers During Pandemic COVID-19 Emergency.

On January 8, 2020, a novel coronavirus was officially announced as the causative pathogen of coronavirus disease (COVID-19) by the Chinese Center for Disease Control and Prevention.On February 26, COVID-19 has been recognized in 34 countries, with a total of 80,239 laboratory-confirmed patients and 2700 deaths.Protecting healthcare workers from infectious hazards is paramount to ensuring their safety in delivering health care.