Shigeki Kuwata Hitomi Yamada Keunsik Park Longitudinal Analysis on Utilization of Medical Document Management System in a Hospital with EPR Implementation. 117-121 2011 ITCH http://dx.doi.org/10.3233/978-1-60750-709-3-117 conf/itch/2011 db/conf/itch/itch2011.html#KuwataYP11