[To Parent Directory] 8/6/2015 9:12 AM 9422558 pa_76-31.pdf 8/6/2015 9:12 AM 21160227 pa_76-31_fig_1.pdf 8/6/2015 9:12 AM 18127430 pa_76-31_fig_2.pdf 8/6/2015 9:12 AM 19255817 pa_76-31_fig_3.pdf 8/6/2015 9:12 AM 13859101 pa_76-31_fig_4.pdf