Special thanks to the following individuals for providing data or comments:

Tom Backer, Human Interaction Research Institute
Robin Baker and Aimee Tucker, UC Berkeley Labor Occupational Health Program
E. Richard Brown, UCLA Center for Health Policy Research
Roni Cleland, Tom David, Lucía Corral Peña and Gary Yates, The California Wellness Foundation
Stewart Donaldson and Laura Gooler, Claremont Graduate University
Laura Trupin and Ed Yelin, UC San Francisco's Institute for Health Policy Studies