RT Journal Article SR Electronic T1 Inclusion and exclusion criteria and the problem of describing homogeneity of study populations in clinical trials JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP bmjebm-2018-111115 DO 10.1136/bmjebm-2018-111115 A1 Franz Porzsolt A1 Felicitas Wiedemann A1 Susanne Isabel Becker A1 C J Rhoads YR 2018 UL http://ebm.bmj.com/content/early/2018/12/19/bmjebm-2018-111115.abstract AB