American College of Emergency Physicians Clinical Policies Subcommittee (Writing Committee) on Throm, Lo BM, Carpenter CR, Milne K, Panagos P, Haukoos JS, Diercks DB, Members of the American College of Emergency Physicians (ACEP) Clinical Policies Committee (Oversigh, Diercks DB, Anderson JD, Byyny R, Carpenter CR, Friedman BW, Gemme SR, Gerardo CJ, Godwin SA, Hatten BW, Haukoos JS, Kaji A, Kwok H, Lo BM, Mace SE, Mattu A, Promes SB, Shah KH, Shih RD, Silvers SM, Slivinski A, Smith MD, Thiessen MEW, Thompson JT, Tomaszewski CA, Trent SA, Valente JH, Westafer LM, Wall SP, Yu Y, Lin MP, Finnell JT, Schulz T, Vandertulip K