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. 2021 Jul 28;112:107725. doi: 10.1016/j.asoc.2021.107725

Table 7.

The problem instances for comparing approaches.

Problem number Collection centers Temporary centers Permanent centers Hospital
1 1 1 1 2
2 2 1 1 3
3 1 2 1 3
4 1 2 2 2
5 2 2 2 2
6 3 2 2 3
7 4 2 2 4
8 3 1 3 3
9 4 3 2 5
10 4 3 3 6