The original working group met at UC Berkeley on March 7-8, 2018, and was hosted by Martyn Smith (UC Berkeley) and Lauren Zeise (OEHHA, CalEPA). This part of the group was chaired by Ulrike Luderer (UC Irvine). The group examined the literature and developed 12 key characteristics (KCs) of endocrine disrupting chemicals and subsequently published a paper in 2019, Luderer et al., 2019, which included additional invited experts**.
| Last Name | First Name | Institution | Stakeholder | |
| Cooper** | Ralph | U.S. EPA (ret.) | N/A | Government |
| Eskenazi | Brenda | UC Berkeley | eskenazi@berkeley.edu | Researcher |
| Hauser | Russ | Harvard Uni. | rhauser@hsph.harvard.edu | Researcher |
| Korach | Kenneth | NIEHS | korach@niehs.nih.gov | Government |
| Luderer* | Ulrike | UC Irvine | uluderer@uci.edu | Researcher |
| McHale | Cliona | UC Berkeley | cmchale@berkeley.edu | Researcher |
| Moran** | Francisco | OEHHA, California EPA | Francisco.Moran@oehha.ca.gov | Government |
| Rieswijk | Linda | UC Berkeley (currently Maastricht Uni.) | linda.rieswijk@maastrichtuniversity.nl | Researcher |
| Smith | Martyn | UC Berkeley | martynts@berkeley.edu | Researcher |
| Solomon | Gina | UCSF | gina.solomon@ucsf.edu | Researcher |
| Udagawa | Osamu | NIES, Japan | udagawa.osamu@nies.go.jp | Researcher |
| Zeise | Lauren | OEHHA, California EPA | Lauren.Zeise@oehha.ca.gov | Government |
| Zhang | Luoping | UC Berkeley | luoping@berkeley.edu | Researcher |
| Zlatnik** | Marya | UCSF | marya.zlatnik@ucsf.edu | Researcher |
*Chair
**Experts invited to join after the initial meeting
Abbreviations: EPA, Environmental Protection Agency; NIEHS, National Institute of Environmental Health Science; NIES, National Institute for Environmental Studies; OEHHA, Office of Health Hazard Assessment; UCSF, University of California San Francisco