AUTHOR=Ghebre Yohannes T. TITLE=Proton Pump Inhibitors and Osteoporosis: Is Collagen a Direct Target? JOURNAL=Frontiers in Endocrinology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2020.00473 DOI=10.3389/fendo.2020.00473 ISSN=1664-2392