title: Assessments of causal effects--theoretically sound, practically unattainable, and clinically not so relevant.
authors.forename: Wolfgang C
authors.initials: WC
authors.lastname: Winkelmayer
authors.forename: Georg
authors.initials: G
authors.lastname: Heinze
mesh_terms: D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000401:mortality* / Q000628:therapy*; D008297:Male; D010530:Peritoneal Dialysis / Q000401:mortality*; D006435:Renal Dialysis / Q000401:mortality*