Figure 1
From: Increasing participation of cancer patients in randomised controlled trials: a systematic review
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1745-6215-7-16/MediaObjects/13063_2006_Article_153_Fig1_HTML.jpg)
Study selection process.
From: Increasing participation of cancer patients in randomised controlled trials: a systematic review
Study selection process.