Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13287-022-02973-2/MediaObjects/13287_2022_2973_Fig3_HTML.png)
The distribution of collaborators in trials initiated by different sponsors. Data from 169 trials registered on ClinicalTrials.gov. A Number of collaborators trials initiated by different sponsors. B Percentage of collaborators trials initiated by different sponsors