Table 1 Details of subjects included in our study

Animal 1

Yes + infection

No

Grade 4

Device

Animal 2

Yes + infection

No

Grade 4

Device

Animal 3

Yes

No

Grade 2

Device

Animal 4

No

No

n/a

Device

Animal 5

Yes

No

Grade 3

Graft

Animal 6

Yes

No

Grade 1

Graft

Animal 7

No

No

n/a

Graft

Animal 8

Yes

No

Grade 4

Graft

Animal 9

Yes

Yes

Grade 1

Graft

Animal 10

No

Yes

n/a

Graft

Animal 11

No

Yes

n/a

Graft

Animal 12

No

Yes

n/a

Graft

Animal 13

No

Yes

n/a

Device

Animal 14

No

Yes

n/a

Device

Animal 15

No

Yes

n/a

Device

Animal 16

No

Yes

n/a

Device

Animal 17

No

Yes

n/a

Device

Animal 18

No

Yes

n/a

Device

Animal 19

No

Yes

n/a

Device

Animal 20

No

Yes

n/a

Device

Animal 21

No

Yes

n/a

Device

Animal 22

No

Yes

n/a

Device