Clinical researchers in the UK voted these topics as most in need of research, in order to improve clinical trials: “How to boost recruitment”; “How to keep participants in the trial once they have been recruited”; and “How to choose which outcomes to collect”.  Clinical researchers surveyed in low to middle income countries (LMICs), in contrast, ranked “How to choose which outcomes to collect” and “Methods to train research staff” as the most important research methods to understand further. (BioMedCentral)