@misc{indiciae02e0b28c4cb1, title = {An epidemiological study on ectopic pregnancy associated with IUD. A matched case-control study.}, author = {Z M Zhang and S H Qiu and L J Weng and X P Jing}, year = {1988}, url = {https://pubmed.ncbi.nlm.nih.gov/3136982/}, note = {Source identifier: 3136982} }