Effects of an online personal health record on medication accuracy and safety: a cluster-randomized trial. - Jeffrey L. Schnipper; Tejal K. Gandhi; Jonathan S. Wald; Richard W. Grant; Eric G. Poon; Lynn A. Volk; Alexandra C. Businger; Deborah H. Williams; Elizabeth Siteman; Lauren Buckel; Blackford Middleton (J. Am. Medical Informatics Assoc., 2012)