title: If you're not fit, you mustn't quit: observational studies and weighing the evidence.
authors: D L
authors: DL
authors: Segev
authors: A B
authors: AB
authors: Massie
authors: J D
authors: JD
authors: Schold
authors: B
authors: B
authors: Kaplan
mesh_terms: D015992:Body Mass Index; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications / Q000401:mortality*; D016030:Kidney Transplantation / Q000401:mortality*; D006435:Renal Dialysis / Q000401:mortality*; D015996:Survival Rate; D014850:Waiting Lists; D015431:Weight Loss