Since 1999, Professor Herzlinger's work in this area has provided the major impetus for the transformation of the health care sector: first in new consumer-driven insurance products sold by established insurers such as Aetna, United and CIGNA, as well as entrepreneurial firms; and, second, in the appearance of health care focused factories. She has authored a major new book, Who Killed Health Care? (McGraw-Hill, 2007); the best-selling Market-Driven Health Care and Consumer-Driven Health Care; major journal articles; a Harvard Business School Publishing video; and a number of Wall Street Journal articles and Marketplace (NPR) editorials. Professor Herzlinger is widely quoted and interviewed on the subject.