Affiliation
- Hartnell College1
- Humboldt State University1
- Ibn Haldun University1
- InTechOpen2
- Indiana University1
- Iowa State University1
- Johns Hopkins Bloomberg School of Public Health1
- Kansas State University1
- Kwantlen Polytechnic University3
- LibreTexts1
- London School of Hygiene & Tropical Medicine1
- Mercer University1
- National Academies Press (NAP)5
- National Central Library 國家圖書館5
- OAPEN (Open Access Publishing in European Networks) Foundation2
- Open Textbook Library2
- OpenStax College1
- Oregon State University4
- Portland Community College1
- Portland State University3