Wachter and Shojania adapted many of the cases they previously published in the academic literature, some cases previously described in the lay literature (eg, the Duke transplant mix-up and the death of Betsy Lehman at Dana-Farber Cancer Institute), and other cases never previously reported to provide a dramatic account of medical errors and the field of patient safety. Dr. Lucian Leape wrote that Internal Bleeding "shows how cognitive psychology and human factors engineering provide the way out by shifting attention from blaming individuals to fixing faulty systems." The book, now in its fourth printing, continues to be a popular choice for anyone with an interest in patient safety.