TY  - RPRT
TI  - Copper absorption from I.U.C.D.s.
AU  - M Elstein
AU  - B Daunter
PY  - 1973
DO  - 10.1136/bmj.2.5869.776-a
UR  - https://pubmed.ncbi.nlm.nih.gov/4718330/
ID  - 4718330
ER  -