The Ability of Military Critical Care Air Transport Members to Visually Estimate Percent Systolic Pressure Variation. - Cheney, Mark A; Smith, Maia P; Burkhardt, Joshua N; Davis, William T; Brown, Daniel J; Horn, Christopher; Hare, Jonathan; Alderman, Mark; Nelson, Eric; Proctor, Melissa; Goodman, Michael; Sams, Valerie; et al. (Military Medicine)