- Subjects who were receiving or had received certain prescribed drugs in the 4 weeks prior to Day 0, particularly topical or systemic steroids, anti- inflammatory, anti-coagulants, antiproliferative drugs and antibiotics. Certain drugs not excluded in this trial included over-the-counter analgesics, including paracetamol and codeine, vitamin and mineral supplements, and cold remedies. If antibiotics were required after Day 0 (e.g., for cases of wound infection), this did not result in the exclusion of affected subjects from the study