n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
4.2 months
8.8 months
n/a
2.0 rounds
2.1 reports
moderate
5.5 months
10.0 months
n/a
1.7 rounds
2.0 reports
difficult
4.6 months
5.8 months
n/a
2.0 rounds
2.0 reports
very difficult
9.0 months
9.0 months
n/a
1.0 rounds
2.0 reports
n/a