TY  - RPRT
TI  - So what's wrong with plasma levels?
AU  - A J Higgins
AU  - P Lees
PY  - 1988
DO  - 10.1111/j.2042-3306.1988.tb01462.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3371325/
ID  - 3371325
ER  -