Global Scientific Research on SARS-CoV-2 (COVID-19).
For analyzing data in the VOS viewer, we used ISI, PubMed, and Scopus as a database. Data were obtained from the Web of Science (WOS), PubMed, and Scopus on March 02, 2020, and updated on March 10. to analyzed in VOS viewer software. The keywords were divided into three clusters: Generally, the lesser the distance between two key-terms, the greater the number of co-occurrences of the terms. The larger circle represents the more frequent keyword