Potential conflicts of interest. R. C. M. reports clinical trial support (paid to his institution) from AiCuris, Sound Pharmaceuticals, Biotest, and GeoVax; honoraria for scientific advisory panel membership from Shionogi, all unrelated to the contents of this manuscript; travel support from the Society of Critical Care Medicine and the American College of Chest Physicians for committee work; and roles as chair, FCCS for the Crisis Management Committee (unpaid) of the Society of Critical Care Medicine and as chair for the Disaster Response and Global Health Section (unpaid) of the American College of Chest Physicians. The author has submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed.