The Health Foundation has released a useful, and I think important, scan of the literature surrounding the strategy, content and process of training others in quality improvement. The document is a comprehensive and well organised summary of their scan of an enormous number of papers. You can download the 52 page PDF from their website.
What I liked about this literature scan is their focus on the impact of training. If you are responsible for organising or delivering quality improvement training then I recommend this literature review.