American Academy of Pediatrics
http://https://services.aap.org/en/pages/2019-novel-coronavirus-covid-19-infections/clinical-guidance/covid-19-planning-considerations-return-to-in-person-education-in-schools/#.XvYUvOiynNA.facebook
https://services.aap.org/en/pages/2019-novel-coronavirus-covid-19-infections/clinical-guidance/cloth-face-coverings/
Wisconsin Dept. of Public Instruction
http://https://dpi.wi.gov/sspw/2019-novel-coronavirus/school-health-services-information
Sheboygan County Health Dept.
http://https://www.sheboygancounty.com/departments/departments-f-q/health-and-human-services/public-health/communicable-disease/coronavirus-covid-19
Wisconsin Dept. of Health Services
http://https://www.dhs.wisconsin.gov/covid-19/index.htm
CDC (Center of Disease Control
http://https://www.cdc.gov/coronavirus/2019-ncov/community/schools-childcare/guidance-for-schools.html
Healthy Children Organization
http://https://www.healthychildren.org/English/health-issues/conditions/COVID-19/Pages/default.aspx