@article {Low438, author = {N Low and M Egger and I Simms and B Herrmann}, title = {Contrasting trends in rates of genital chlamydial infection and ectopic pregnancy in South East Thames Region, England and Uppsala County, Sweden: ecological study.}, volume = {53}, number = {7}, pages = {438--439}, year = {1999}, doi = {10.1136/jech.53.7.438}, publisher = {BMJ Publishing Group Ltd}, issn = {0143-005X}, URL = {https://jech.bmj.com/content/53/7/438}, eprint = {https://jech.bmj.com/content/53/7/438.full.pdf}, journal = {Journal of Epidemiology \& Community Health} }