- Subjects with any clinically significant medical condition that would impair wound healing including; significant rheumatoid arthritis, chronic renal impairment significant for their age, significant hepatic impairment (LFTs >3 times upper limit of normal), congestive heart failure, current active malignancy or history of malignancy in the last 5 years, immunosuppression or chemotherapy within the last 12 months, a history of radiotherapy and diabetes mellitus