Department of Medical Information, Xiangya School of Medicine, Central South University, Changsha 410013, China;
Key Laboratory of Medical Information Research, Central South University,Changsha 410013, China;
Library of Hebei Normal University for Nationalities, Chengde 067000, China;
Department of Medical Information, Xiangya School of Medicine, Central South University, Changsha 410013, China;
Key Laboratory of Medical Information Research, Central South University,Changsha 410013, China;
The Third Xiangya Hospital, Central South University, Changsha 410013, China;