The studies were conducted by scientists at Northshore University in Illinois.

https://docs.google.com/presentation/d/1B1mEEJviSLayNMx4KBCL2Ts60o-r4VuV3YwoOsLgzWw/edit?usp=sharing

(Image citations on the slide show, as they may be hard to see in the video)

 

Bibliography:

https://docs.google.com/document/d/16dNGljR2Vt5wx0JklMkXt76Z8w8huKLvGcOPwf2KoiU/edit?usp=sharing