Link to the Show / Show Notes This summary covers the issue of January 21, 2010. Featured are articles on treatment with monoclonal antibodies against Clostridium difficile infection, skeletal dysplasia and the Golgi apparatus, and left ventricular filling in emphysema and airflow obstruction; review articles on systolic heart failure and on Williams-Beuren syndrome; a case report of a man with abdominal and flank pain; and Perspective articles on erythropoiesis-stimulating agents and on accelerating the use of electronic health records in physician practices.