AUTHOR=Lemke Dirk , Klement Rainer Johannes , Schweiger Felix , Schweiger Beatrix , Spitz Jörg TITLE=Vitamin D Resistance as a Possible Cause of Autoimmune Diseases: A Hypothesis Confirmed by a Therapeutic High-Dose Vitamin D Protocol JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.655739 DOI=10.3389/fimmu.2021.655739 ISSN=1664-3224