[To Parent Directory] 9/15/2020 12:14 PM 23857319 pa_72-45.pdf 9/15/2020 12:14 PM 3137201 pa_72-45_fig4.pdf 9/15/2020 12:14 PM 5165052 pa_72-45_fig6.pdf 9/15/2020 12:14 PM 2734282 pa_72-45_fig7.pdf