It should be said that cranial repair is one of the more basic neurosurgical procedures, and it can be said that the vast majority of them are safe, because the whole operation is outside the brain, under the scalp, outside the brain. So it’s not supposed to go into the brain, it’s supposed to be separated from the brain through this natural gap underneath the brain, and also through the outer layer of the artificial dura mater, or the outer layer of a pseudomembrane that’s formed. So generally it’s a safe procedure. Of course there may be some anesthesia factors involved here, especially if this patient has had this kind of hypertensive cerebral hemorrhage in the past, he may have some underlying disease, so for the anesthesia aspect, it’s similar to the general patient, he is supposed to make sure that the anesthesia is safe, and the surgery itself should still be relatively safe.