Randomized controlled trial of health maintenance reminders provided directly to patients through an electronic PHR - Wright, A; Poon, EG; Wald, J; Feblowitz, J; Pang, JE; Schnipper, JL; Grant, RW; Gandhi, TK; Volk, LA; Bloom, A; Williams, DH; Gardner, K; Epstein, M; Nelson, L; Businger, A; Li, Q; Bates, DW; Middleton, B (Journal Gen Intern Med, 2012)