27-Norcholestanehexol/Creatinine:Ratio:Pt:Urine:Qn
27-norcholestanehexol/creatinine:ratio:pt:urine:qn
27-Norcholestanehexol/Creatinine:Ratio:Pt:Urine:Qn
27-norcholestanehexol/creatinine:ratio:pt:urine:qn