Urea^post dialysis/pre dialysis:SRto:Pt:Ser/Plas:Qn
urea^post dialysis/pre dialysis:srto:pt:ser/plas:qn
Urea^post dialysis/pre dialysis:SRto:Pt:Ser/Plas:Qn
urea^post dialysis/pre dialysis:srto:pt:ser/plas:qn