Sildenafil citrate:SCnc:Pt:Ser/Plas:Qn
sildenafil citrate:scnc:pt:ser/plas:qn
Sildenafil citrate:Substance Concentration:To identify measures at a point in time:Serum/Plasma:Quantitative
sildenafil citrate:substance concentration:to identify measures at a point in time:serum/plasma:quantitative