Surveillance for Unexplained Deaths and Critical Illnesses oleh Rana A. Hajjeh, David Relman, Paul R. Cieslak, Andre N. Sofair, Douglas Passaro, Jennifer Flood, James Johnson, Jill K. Hacker, Wun-Ju Shieh, R. Michael Hendry, Simo Nikkari, Stephen Ladd-Wilson, James L. Hadler, Jean Rainbow, Jordan W. Tappero, Christopher W. Woods, Laura Conn, Sarah Reagan, Sherif Zaki, Bradley A. Perkins