TY  - RPRT
TI  - Inter-labortory variations in urinary oestriol estimates.
AU  - M Lever
AU  - S M Peace
PY  - 1974
DO  - 10.1111/j.1471-0528.1974.tb00426.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4816030/
ID  - 4816030
ER  -