1. From Johns Hopkins University Bloomberg School of Public Health (AK, BW, JM, JF),
Baltimore, Maryland; Baltimore City Fire Department (FH, WG),
Baltimore, Maryland; Baltimore Substance Abuse Systems, Inc. (YO),
Baltimore, Maryland; the Institute for Behavior Resources, Inc. (YO, JF),
Baltimore, Maryland; Johns Hopkins School of Medicine (YO),
Baltimore, Maryland; and the University of Maryland School of Medicine (WG),
Baltimore, Maryland.