*University of California, Merced, Merced

†University of California, ANR, Davis

‡University of California Division of Agriculture and Natural Resources, Davis, Davis

§University of California, Berkeley, Berkeley

∥Diringer and Associates, San Luis Obispo, CA

Funding was provided by a grant from the California Department of Public Health.

The authors declare no conflict of interest.

Correspondence to: Nimrat K. Sandhu, MBBS, MPH, Department of Public Health, University of California, Merced, 5200 Lake Road, Merced, CA 95343. E-mail: [email protected].

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