Fig. 7
Word tree between 2003 and 2023 (top 50 author keywords). a provides an in-depth examination of the research landscape within each time period encompassed by this study (2033–2023). b was utilized to ascertain the temporal scope of the latest research advancements (2021–2023) by employing keyword analysis, a distinctive attribute absent in the VOSviewer software. These two figures collectively offer a comprehensive depiction of the research patterns throughout the entire study duration (a) and specifically post-2021 (b)