The United Hospital Fund meeting on evaluating health information exchange. - George Hripcsak; Rainu Kaushal; Kevin B. Johnson; Joan S. Ash; David W. Bates; Rachel Block; Mark E. Frisse; Lisa M. Kern; Janet Marchibroda; J. Marc Overhage; Adam B. Wilcox (J. Biomed. Informatics, 2007)