Evaluating the Acromion Marker Cluster as a Method for Measuring Scapular Orientation in Children With Brachial Plexus Birth Palsy. - Nicholson, Kristen F.; Russo, Stephanie A.; Kozin, Scott H.; Zlotolow, Dan A.; Hulbert, Robert L.; Rowley, K. Michael; Richards, James G. (Journal of Applied Biomechanics, 2014)