National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
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National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
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.1.0) ( 10 ). The changes in burst keywords with the year of publication were analyzed by CiteSpace (version 6.1. R6) software ( 11 ). VOSviewer (version 1.6.18) software was mainly used to conduct co-occurrence, co-citation, and co-authorship analyses ( 12