AUTHOR=Argiris Athanassios , Licitra Lisa TITLE=Editorial: Advances in the Systemic Therapy and Combined Modality Approaches for Head and Neck Cancer JOURNAL=Frontiers in Oncology VOLUME=9 YEAR=2019 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2019.01190 DOI=10.3389/fonc.2019.01190 ISSN=2234-943X