AUTHOR=Fiocchi Claudio TITLE=Inflammatory Bowel Disease: Complexity and Variability Need Integration JOURNAL=Frontiers in Medicine VOLUME=5 YEAR=2018 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2018.00075 DOI=10.3389/fmed.2018.00075 ISSN=2296-858X