fig4
![Collagen membrane for reconstruction of soft tissue defects after surgery of oral cancer and precancer: a brief review](https://image.oaes.cc/c3cb17a0-161a-42b9-b2f6-e633e86f9b53/1348.fig.4.png)
Figure 4. The collagen graft in place after suturing; the gauze is removed just before placing the last suture
Figure 4. The collagen graft in place after suturing; the gauze is removed just before placing the last suture
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