AUTHOR=Grassmeyer Justin J. , Thoreson Wallace B. TITLE=Corrigendum: Synaptic Ribbon Active Zones in Cone Photoreceptors Operate Independently From One Another JOURNAL=Frontiers in Cellular Neuroscience VOLUME=13 YEAR=2019 URL=https://www.frontiersin.org/journals/cellular-neuroscience/articles/10.3389/fncel.2019.00541 DOI=10.3389/fncel.2019.00541 ISSN=1662-5102