15 Mar 2025
// REUTERS
https://www.reuters.com/business/healthcare-pharmaceuticals/us-fda-warns-against-recreational-use-laughing-gas-2025-03-14/
09 Jun 2021
// SCIENCEDAILY
https://www.sciencedaily.com/releases/2021/06/210609143446.htm#:~:text=FULL%20STORY-,A%20single%2C%20one%2Dhour%20treatment%20that%20involves%20breathing%20in%20a,in%20St.%20Louis%20and%20the
09 Jan 2017
// FDA
http://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&ApplNo=209989