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APA Citation
Grun, L., & Sheldon, J. (1996). "Does ligase chain reaction assay of urine in the diagnosis of Chlamydia trachomatis offer significant improvement over existing diagnostic tests?"--a critical appraisal of the evidence.. Sexually transmitted infections, 72(6), 435–439. http://access.bl.uk/ark:/81055/vdc_100143170916.0x000003