1 Division of Women's Health in Emergency Care and Injury Prevention Center, Department of Emergency Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island.
2 School of Public Health, Brown University, Providence, Rhode Island.
3 Division of Infectious Diseases, Department of Medicine, Miriam Hospital, Warren Alpert Brown Medical School, Brown University, Providence, Rhode Island.
4 Department of Emergency Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island.
5 Department of Emergency Medicine, Thomas Jefferson University Hospital, Jefferson Medical College, Philadelphia, Pennsylvania.
6 Department of Emergency Medicine, Oregon Health & Science University, Portland, Oregon.