Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author exact C6E43A98-49B6-11E4-AA90-F166B5D1D7B1 or (type any "bookEditor journalEditor issueEdi... cql: keyword exact "access" Add to list Journal Article A1 open access Associations and synergistic effects for psychological distress and chronic back pain on the utilization of different levels of ambulatory health care: a cross-sectional study from Austria Kathryn Hoffmann (UGent) , Wim Peersman (UGent) , Aaron George and Thomas Ernst Dorner (2015) PLOS ONE. 10(7).