Books By Elson M. Haas, Sondra Barrett - Author

Elson M. Haas, MD, is the medical director of the Preventive Medical Center of Marin in San Rafael, California, and one of the nation's leading practitioners of integrative medicine. He lives in San Rafael, CA.

Sondra G. Barrett holds a PhD in biochemistry and completed postdoctoral training in immunology at the University of California Medical School, San Francisco. She lives in Petaluma, CA.