Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1472-6947-11-34/MediaObjects/12911_2011_Article_413_Fig4_HTML.jpg)
Turnaround time definitions in the whole clinic and all other domains. All identified definitions are illustrated with their starting and end points on a generic timeline. The number in brackets shows the number of papers in which the respective definition was used.