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. 2021 Aug 2;16(8):e0255115. doi: 10.1371/journal.pone.0255115

Table 9. Hierarchical division of barriers.

Barriers R(Pi) A(Pi) C(Pi) Level
BM6 6,15 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 6,15 I
BM15 6,15 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 6,15 I
BM12 12,13,14 1,2,3,4,5,7,8,9,10,11,12,13,14 12,13,14 II
BM13 12,13,14 1,2,3,4,5,7,8,9,10,11,12,13,14 12,13,14 II
BM14 9,12,13,14 1,2,3,4,5,7,8,9,10,11,12,13,14 9,12,13,14 II
BM5 5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 5,7,8,9,10,11 III
BM7 5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 5,7,8,9,10,11 III
BM8 5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 5,7,8,9,10,11 III
BM9 5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 5,7,8,9,10,11 III
BM10 5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 5,7,8,9,10,11 III
BM11 1,2,3,4,5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 1,2,3,4,5,7,8,9,10,11 III
BM1 1,2,3,4 1,2,3,4 1,2,3,4 IV
BM2 1,2,3,4 1,2,3,4 1,2,3,4 IV
BM3 1,2,3,4 1,2,3,4 1,2,3,4 IV
BM4 1,2,3,4 1,2,3,4 1,2,3,4 IV