- patients with systemic disease (such as unstable or non compensatory respiratory, cardiac, liver or kidney disease) with severe or no control. Any unstable systemic disease (including active infection, grade four hypertension, unstable angina, congestive heart failure, liver and kidney, or metabolic disease). Any other malignant tumor in the five years (except for the complete cure of cervical carcinoma in situ or basal cell or squamous cell skin cancer). There is a history of clear neurological or mental disorders, including epilepsy or dementia.