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). The group was co-chaired* by Xabier Arzuaga (U.S. EPA) and Gail Prins (Uni. Illinois, Chicago). The group examined the literature and developed 12 key characteristics (KCs) of male reproductive toxicants and subsequently published a paper in 2019, Arzuaga et al, 2019, which included additional invited experts**.
| Last Name | First Name | Institution | Stakeholder | |
| Arzuaga* | Xabier | U.S. EPA | Arzuaga.Xabier@epa.gov | Government |
| Beverly** | Brandiese | U.S. NTP | brandy.beverly@nih.gov | Government |
| Gibbons | Catherine | U.S. EPA | Gibbons.Catherine@epa.gov | Government |
| Hauser | Russ | Harvard Uni. | rhauser@hsph.harvard.edu | Researcher |
| Hotchkiss** | Andrew | U.S. EPA | Hotchkiss.Andrew@epa.gov | Government |
| Korach | Kenneth | NIEHS | korach@niehs.nih.gov | Government |
| Pagani** | Rodrigo | Uni. Illinois, Chicago | rpagani@uic.edu | Researcher |
| Prins* | Gail | Uni. Illinois, Chicago | gprins@uic.edu | Researcher |
| Sandy | Martha | OEHHA, California EPA | Martha.Sandy@oehha.ca.gov | Government |
| Schrader | Steve | NIOSH (ret.) | N/A | Government |
| Skakkebaek | Niels | Copenhagen Uni., Denmark | Niels.Erik.Skakkebaek@regionh.dk | Researcher |
| Smith | Martyn | UC Berkeley | martynts@berkeley.edu | Researcher |
| Yost** | Erin | U.S. EPA | Yost.Erin@epa.gov | Government |
| Zeise | Lauren | OEHHA, California EPA | Lauren.Zeise@oehha.ca.gov | Government |
*Co-Chairs
**Additional experts added after the original working group meeting.
Abbreviations: CPMC, California Pacific Medical Center; EPA, Environmental Protection Agency; NIEHS, National Institute of Environmental Health Sciences; NIOSH, National Institute for Occupational Safety and Health; NTP, National Toxicology Program; OEHHA, Office of Health Hazard Assessment,