TY  - RPRT
TI  - An epidemiological study on ectopic pregnancy associated with IUD. A matched case-control study.
AU  - Z M Zhang
AU  - S H Qiu
AU  - L J Weng
AU  - X P Jing
PY  - 1988
UR  - https://pubmed.ncbi.nlm.nih.gov/3136982/
ID  - 3136982
ER  -