article_metadata: Afsaneh Alavi Jeannine Archer Patricia Coutts
article_metadata: 10.1177/2050313X211013684
article_metadata: SAGE Open Med Case Rep
article_metadata: 2021 May 13;9:2050313X211013684.
article_metadata: chronic wounds collagen venous ulcer
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/34035916/
article_metadata: Case Reports
article_metadata: PMC8127786
article_metadata: 34035916
article_metadata: Use of an advanced collagen matrix dressing on patients with complex chronic lower extremity ulcers: A case series
article_metadata: 2021