Vitamin D use and mortality in chronic kidney disease: immortal time bias.
St Peter
Wendy L
WL
Weinhandl
Eric D
ED
Liu
Jiannong
J
D015982:Bias; D002117:Calcitriol / Q000627:therapeutic use*; D002908:Chronic Disease; D006801:Humans; D007674:Kidney Diseases / Q000188:drug therapy* / Q000401:mortality*; D013997:Time Factors; D014815:Vitamins / Q000627:therapeutic use*
D014815:Vitamins; D002117:Calcitriol