Mucosectomy

Hi!

Does anybody have a frame of reference of how many hand sewn mucosectomies makes a colorectal surgeon "experienced" in performing them?

I understand how important it is to have a skilled experienced surgeon for this less common intricate anastomosis, however, I am not sure in general how many J Pouch surgeries with hand sewn mucosectomies a surgeon should have performed to be considered "experienced".

Thank you!