%0 Journal Article %T Stability of δ-Aminolevulinic Acid and Porphobilinogen in Urine Under Varying Conditions %A Bossenmaier,, Irene %A Cardinal,, Ruth %J Clinical Chemistry %V 14 %N 7 %P 610-614 %@ 0009-9147 %D 1968-07-01 %I American Association of Clinical Chemistry %~ DeepDyve