A pragmatic approach to estimating average treatment effects from EHR data: the effect of prone positioning on mechanically ventilated COVID-19 patients. - Adam Izdebski; Patrick J. Thoral; Robbert C. A. Lalisang; Dean M. McHugh; Robert Entjes; Nardo J. M. van der Meer; Dave A. Dongelmans; Age D. Boelens; Sander Rigter; Stefaan H. A. Hendriks; Remko de Jong; Marlijn J. A. Kamps; et al. (CoRR, 2021)