1 Subjects: “...population...”

2 Subjects: “...population...”

3 Subjects: “...population...”

4 Subjects: “...populations structure...”

5 Subjects: “...population...”

6 Subjects: “...densely populated area...”

7 Subjects: “...population structure...”

8 Subjects: “...population urbanization...”

9 Subjects: “...population sizes...”

10 Subjects: “...population density...”

11 Subjects: “...older population...”