Rossum, L.K. van

clearance inulin plasma method children filtration rate concentration patient cystatin c marker cystatin plasma clearance injection method filtration creatinine injection inulin plasma clearance sample formula reference inuline determination inulin clearance infusion sampling blood sampling strategies blood samples model plasma creatinine concentration difference chapter estimate strategy pharmacokinetic formulae function population estimation value methode serum estimate gfr analysis infusion method nierfunctie parameter study 125 i-iothalamate schwartz kidney urine ratio validation performance kinderen body height validation data nephrol table height index index data cransberg k pediatr error klaring cr-edta i-iothalamate extraction agreement injectie injectie methode number plasma concentration measurement cystatin c concentration 51 cr-edta body surface area range