Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12883-022-02956-z/MediaObjects/12883_2022_2956_Fig3_HTML.png)
Proportional changes in the findings of severe patients at different time stages. NOTE: The horizontal axis shows the time stages (Stages 1–4)
Proportional changes in the findings of severe patients at different time stages. NOTE: The horizontal axis shows the time stages (Stages 1–4)