Affiliation
- California State University Sacramento2
- Carleton University2
- Centers for Disease Control and Prevention2
- Central Oregon Community College2
- Cleveland State University Cleveland Marshall College of Law2
- College of Southern Nevada2
- College of the Sequoias2
- CrashCourse2
- Dartmouth College2
- De Anza College2
- DePauw University2
- Doane University2
- Eastern Institute of Technology2
- Fredericksburg, Virginia2
- Furman University2
- Idaho State University2
- Johns Hopkins University2
- Lake Superior College2
- Lakeland Community College2
- Lansing Community College2