10.6084/m9.figshare.7465979.v1 Aaron Yarlas Aaron Yarlas Stephen Maher Stephen Maher Martha Bayliss Martha Bayliss Andrew Lovley Andrew Lovley Joseph Cappelleri Joseph Cappelleri Marco DiBonaventura Marco DiBonaventura Additional file 1: of Psychometric validation of the work productivity and activity impairment questionnaire in ulcerative colitis: results from a systematic literature review Springer Nature 2018 Ulcerative colitis Inflammatory bowel disease Work productivity and activity impairment questionnaire Absenteeism Presenteeism Work productivity Literature review 2018-12-13 05:00:00 Journal contribution https://springernature.figshare.com/articles/journal_contribution/Additional_file_1_of_Psychometric_validation_of_the_work_productivity_and_activity_impairment_questionnaire_in_ulcerative_colitis_results_from_a_systematic_literature_review/7465979 Appendix 1. Work Productivity and Activity Impairment Questionnaire (WPAI). Appendix 2. Terms and Strings Used in Electronic Database Literature Searches. (DOCX 21 kb)