Brown, D L <br/><br/>
Transvaginal sonography for diagnosing ectopic pregnancy: positivity criteria and performance characteristics.  [electronic resource] 

 -  Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine  Apr 1994 
 - 259-66 p.  digital 
<br/><br/> Publication Type: Journal Article; Meta-Analysis 
<br/><br/><label>ISSN: </label>0278-4297 
<br/><br/><label>Standard No.: </label>10.7863/jum.1994.13.4.259  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bayes Theorem<br/>Female<br/>Humans<br/>Predictive Value of Tests<br/>Pregnancy<br/>Pregnancy, Ectopic--diagnostic imaging<br/>Prevalence<br/>Sensitivity and Specificity<br/>Ultrasonography, Prenatal--methods