Blue Button use by patients to access and share health record information using the Department of Veterans Affairs' online patient portal. - Carolyn L. Turvey; Dawn M. Klein; Gemmae M. Fix; Timothy P. Hogan; Susan S. Woods; Steven R. Simon; Mary Charlton; Mary S. Vaughan-Sarrazin; Donna M. Zulman; Lilian Dindo; Bonnie J. Wakefield; Gail Graham; et al. (J. Am. Medical Informatics Assoc., 2014)