Group 1

Group 2

Group 3

Day 28

>90% regrowth

0

0

0

<90% regrowth

8

8

8

Day 56

>90% regrowth

0

3

8^A,B

<90% regrowth

7

5

0

Day 84

>90% regrowth

0

8^C

8^C

<90% regrowth

7

0

0