Scientometric analysis
Web of Science Core Collection (WoSCC) is the most fundamental data source for both Citespace (6.1.R3) and VOS viewer (1.6.18). And the source of this scientometric analysis was the Science Citation Index Expanded (Web of Science (WoS). WoS platform provided the distribution of publications and citations by year.Citespace (6.1.R3). The 1,255 results were downloaded from WoSCC in the Plain Text File form. The process of removing duplicates was conducted. And there were no duplicate records. Statistics of fields were obtained: 1247 publications (99.36%) with abstracts, 1255 publications (100%) with DOI numbers, 1252 publications (99.76%) with author keywords, 1255 publications (100%) with subject categories, and 1254 publications (99.92%) with cited references. Before the analysis, Citespace was adjusted by: 1) Time Slicing: 1999 Jan - 2022 October; 2) Selection Criteria: Top 50 levels from each slice; 3) Functions of Pruning: Retain the default. In this study, Citespace was used to provide analyses of studying countries and institutions, references, and keywords (including co-occurrence analysis, burst analysis, and timeline view analysis).VOS viewer (1.6.18). The 1,255 results were downloaded from WoSCC in the Tab Delimited File form. VOS viewer was used to make analyses of researching authors of this field.