We know of no documented cases personally or in the literature where serious harm has resulted. All of our patients will be entered into a database to follow and report any adverse reactions. This information is vital to the development of stem cell science. There have been a few reports of serious complications from overseas and these are being thoroughly evaluated by epidemiologists to ascertain the facts. The International Stem Cell Society registry has over 1,000 cases currently registered and only 2% of the treatments were associated with any complications, none of which were considered serious adverse events.