Frontera WR, Bean JF, Damiano D, Ehrlich-Jones L, Fried-Oken M, Jette A, Jung R, Lieber RL, Malec JF, Mueller MJ, Ottenbacher KJ, Tansey KE, Thompson A. Rehabilitation Research at the National Institutes of Health: Moving the Field Forward (Executive Summary). Arch Phys Med Rehabil. 2017 04; 98(4):795-803.