Leukotriene E4/Creatinine:MRto:24H:Urine:Qn
leukotriene e4/creatinine:mrto:24h:urine:qn
Leukotriene E4/Creatinine:Mass Ratio:24 hours:Urine:Quantitative
leukotriene e4/creatinine:mass ratio:24 hours:urine:quantitative