Differences in serum concentrations of per-and polyfluoroalkyl substances by occupation among firefighters, other first responders, healthcare workers, and other essential workers in Arizona, 2020-2023. - Mitchell CL; Hollister J; Fisher JM; Beitel SC; Ramadan F; O'Leary S; Fan ZT; Lutrick K; Burgess JL; Ellingson KD (Journal of exposure science & environmental epidemiology, 2025)