AUTHOR=Gbotosho Oluwabukola T. , Kapetanaki Maria G. , Kato Gregory J. TITLE=The Worst Things in Life are Free: The Role of Free Heme in Sickle Cell Disease JOURNAL=Frontiers in Immunology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2020.561917 DOI=10.3389/fimmu.2020.561917 ISSN=1664-3224