1 Subjects: “...root canal filling...”

2 Subjects: “...alimentary canal...”

3 Subjects: “...central canal...”

4 Subjects: “...lined irrigation open-canal...”

5 Subjects: “...Suez Canal (SC)...”

6 Subjects: “...Suez Canal (SC)...”

7 Subjects: “...root canal obturation...”

8 Subjects: “...Hood Canal...”

9 Subjects: “...canal pool...”

10 Subjects: “...cysts of the canal of Nuck...”