Dr. Mary O'Brien is a board-certified attending physician at Columbia University Health Services and a faculty member at the Columbia College of Physicians and Surgeons. She is on the Board of Directors of the New York Metro Chapter of Physicians for a National Health Program and is the chair of its media committee. Dr. Martha Livingston is Associate Professor of Health and Society at the State University of New York College at Old Westbury. She is Vice-Chair of the Board of Directors of the New York Metro chapter of Physicians for a National Health Program. Both live in New York.