1 California Department of Public Health, 850 Marina Bay Parkway P-3, Richmond, CA 94804, USA. Electronic address: Kristin.Cummings@cdph.ca.gov.
2 Massachusetts General Hospital, Pulmonary/Critical Care, Bulfinch 148, 55 Fruit Street, Boston, MA 02114, USA. Electronic address: PSLAI@hsph.harvard.edu.
3 Yale School of Medicine, Occupational Health and Environmental Medicine, 367 Cedar Street, ESH A 2rd Floor, New Haven, CT 06510, USA. Electronic address: carrie.redlich@yale.edu.