Authors: Richard A Hoppmann; Victor V Rao; Mary Beth Poston; Duncan B Howe; Patrick S Hunt; Stanley D Fowler; Lance E Paulman; James R Wells; Nancy A Richeson; Paul V Catalana; Lynn K Thomas; L Britt Wilson; Thomas Cook; Shaun Riffle; Francis H Neuffer; James B McCallum; Brian D Keisler; Rachel S Brown; Anthony R Gregg; Kerry M Sims; Caroline K Powell; Matthew D Garber; James E Morrison; William B Owens; Kevin A Carnevale; William R Jennings; Sarah Fletcher Journal: Crit Ultrasound J Date: 2011-02-01