Additional file 2: of Usefulness of a visual aid in achieving optimal positioning for spinal anesthesia: a randomized trial Usha Gurunathan Shakeel Kunju Karen Hay Sharyn van Alphen 10.6084/m9.figshare.5808657.v1 https://springernature.figshare.com/articles/figure/Additional_file_2_of_Usefulness_of_a_visual_aid_in_achieving_optimal_positioning_for_spinal_anesthesia_a_randomized_trial/5808657 Visual images used for the spinal positioning. Description of the data: The visual images used in the study for the participants in group 2 included photos of one correct position and three incorrect positions. The images intended to convey the same information as the verbal instructions. (TIFF 15913 kb) 2018-01-20 05:00:00 Anesthesia Patient positioning Spinal