Summary: Summary of the May 15, 2012 issue, including articles on a case management program to prevent COPD hospitalizations, predicting survival in idiopathic pulmonary fibrosis, laxative-free computed tomographic colonography, risk for colorectal cancer, strategies and duration of thromboprophylaxis after major orthopedic surgery, Institutional Review Boards, an Update in pulmonary and critical care medicine, and reactivation of hepatitis B virus infection during immunosuppressive therapy.
