TY  - RPRT
TI  - Colorimetric method for the rapid and quantitative determination of 4-hydroxy-3-methoxymandelic acid (vanilmandelic acid) in human urine.
AU  - G Gumboldt
PY  - 1977
UR  - https://pubmed.ncbi.nlm.nih.gov/20249/
ID  - 20249
ER  -