Confict of Interest Statement

eMedicine and the University of Nebraska Medical Center request disclosure of individual authors and editors financial corporate relationships and these are individually posted within each test. Many authors may include a discussion of an unlabeled use of or an investigative use not yet approved of a commercial product. Therefore, it is incumbent on individuals reading these articles and taking medical education courses to be aware of these factors in interpreting article contents and evaluating the recommendations of authors. Every effort has been made to encourage faculty to disclose any commercial relationships or personal benefits which may be associated with their articles.