AUTHOR=Heiss Uwe , Rosenfield Maayan , Bernstein Michael H. TITLE=Can the Open Label Placebo Rationale Be Optimized? JOURNAL=Frontiers in Pain Research VOLUME=2 YEAR=2021 URL=https://www.frontiersin.org/journals/pain-research/articles/10.3389/fpain.2021.734882 DOI=10.3389/fpain.2021.734882 ISSN=2673-561X