Phosphoethanolamine/Creatinine:MRto:24H:Urine:Qn
phosphoethanolamine/creatinine:mrto:24h:urine:qn
Phosphoethanolamine/Creatinine:Mass Ratio:24 hours:Urine:Quantitative
phosphoethanolamine/creatinine:mass ratio:24 hours:urine:quantitative