AUTHOR=De Berardis Domenico , Fornaro Michele , Carmassi Claudia TITLE=Editorial: Comorbidity in bipolar disorder, volume II JOURNAL=Frontiers in Psychiatry VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2023.1115357 DOI=10.3389/fpsyt.2023.1115357 ISSN=1664-0640