Clinic: critically appraised topics. Ectopic pregnancy evaluating first-line diagnostic tools.
Onega
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Ottauquechee Health Center,  Woodstock, Vt., USA.
D015746:Abdominal Pain / Q000209:etiology; D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D016013:Likelihood Functions; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D012680:Sensitivity and Specificity; D016216:Ultrasonography, Prenatal
D018997:Chorionic Gonadotropin, beta Subunit, Human