Fig. 5
![Fig. 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12887-020-02093-x/MediaObjects/12887_2020_2093_Fig5_HTML.png)
a: Trend of platelet changes in children before and after surgery in VMs group. b: Trend of fibrinogen changes in children before and after surgery in VMs group. c: Trend of platelet changes in children before and after surgery in KHE group. d: Trend of fibrinogen changes in children before and after surgery in KHE group. w: week(s), m:month(s)