AUTHOR=Poulsen Per R., Saramad Shahyar , Høyer Morten , Samadi Miandoab Payam TITLE=Accuracy of four models and update strategies to estimate liver tumor motion from external respiratory motion JOURNAL=Frontiers in Oncology VOLUME=14 YEAR=2024 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2024.1470650 DOI=10.3389/fonc.2024.1470650 ISSN=2234-943X