AUTHOR=Souliotis Kyriakos , Golna Christina , Samara Myrto , Tsapakis Eva-Maria , Bozikas Vasilios P. , Hyphantis Thomas N. , Smyrnis Nikolaos , Stefanis Nikos TITLE=Treatment-resistant or difficult-to-treat depression: a consensus on the pharmacotherapy challenges and considerations for the health care system in Greece JOURNAL=Frontiers in Psychiatry VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1561821 DOI=10.3389/fpsyt.2025.1561821 ISSN=1664-0640