World Health Organization. WHO & UNICEF. IFRC (2020). Key Messages and Actions for COVID-19 Prevention and Control in Schools.
https://www.who.int/docs/default-source/coronaviruse/key-messages-and-actions-for-covid19-prevention-and-control-in-schools-march2020.pdf?sfvrsn=baf81d52_4&gclid=Cj0KCQjwoPL2BRDxARIsAEMm9y-yhpkw2N6vL2qCIh6idMeCR7pJkdOP-WrZxsu_UwMbf1xyZcxHUkaAo6YEALw_wcB

has been cited by the following article: