Management of Pain and Cachexia in Pancreatic Cancer: Protocol for Two Systematic Reviews, Network Meta-Analysis, Surveys, and Focus Groups oleh Danielle Amanda Roberts, Eila Watson, Christopher Macdonald, Yarunnessa Khan, Sarah Prideaux, Alwin Puthiyakunnel Saji, Emilia Postaleniec, Jashan Selvakumar, Mahta Haghighat Ghahfarokhi, Brian Davidson, Kurinchi Gurusamy