TY  - RPRT
TI  - Ethnic differences in urinary oestrogens.
AU  - M Briggs
PY  - 1972
DO  - 10.1016/s0140-6736(72)90336-4
UR  - https://pubmed.ncbi.nlm.nih.gov/4109965/
ID  - 4109965
ER  -