Fig. 3: Global distribution of origin and ancestry of the study populations and countries of affiliation and gender distribution of authors of the included studies.

Panel A shows the top 20 countries of origin and ancestry of the study populations evaluated in the included studies. Panel B shows the top 20 countries of affiliation and gender distribution of authors of the included studies. The data used for this visualization was obtained from PubMed and PubMed Central through manual curation and by applying text mining functions developed using R software version 4.1.2. The final proportions of ancestries were calculated for each unique study and then aggregated as described in detail here448.