The British Journal of Cancer – owned by Cancer Research UK (CR-UK) – has chosen to implement the Creative Commons Attribution-NonCommercial-Share Alike 3.0 licence http://creativecommons.org/licenses/by-nc-sa/3.0/ for articles published under the BJC OPEN initiative. This licence permits distribution and reproduction in any medium, provided the original author and source are credited.
A Thu, study studied this question.