Treatment of gingival recession defects with a coronally advanced flap and a xenogeneic collagen matrix: A multicenter randomized clinical trial

1. Jepsen, K.
2. Jepsen, S.
3. Zucchelli, G.
4. Stefanini, M.
5. De Sanctis, M.
6. Baldini, N.
7. Greven, B.
8. Heinz, B.
9. Wennström, J.
10. Cassel, B.
11. Vignoletti, F.
12. Sanz, M.