The utility of multivariate outlier detection techniques for data quality evaluation in large studies: an application within the ONDRI project. - Sunderland, Kelly M.; Beaton, Derek; Fraser, Julia; Kwan, Donna; McLaughlin, Paula M.; Montero-Odasso, Manuel; Peltsch, Alicia J.; Pieruccini-Faria, Frederico; Sahlas, Demetrios J.; Swartz, Richard H.; Strother, Stephen C.; Binns, Malcolm A.; et al. (BMC Medical Research Methodology, 2019)