Halpern Scott D
Division of Pulmonary, Allergy, and Critical Care Medicine, the Department of Medical Ethics and Health Policy, the Department of Biostatistics and Epidemiology, and the Fostering Improvement in End-of-Life Decision Science (FIELDS) program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
Ann Emerg Med. 2014 Apr;63(4):401-3. doi: 10.1016/j.annemergmed.2013.09.020. Epub 2013 Nov 7.