Implementation of acute care patient portals: recommendations on utility and use from six early adopters. - Lisa V. Grossman; Sung W. Choi; Sarah A. Collins; Patricia C. Dykes; Kevin J. O'Leary; Milisa Rizer; Philip Strong; Po-Yin Yen; David K. Vawdrey (J. Am. Medical Informatics Assoc., 2018)