Triaging pregnancies of unknown location: the performance of protocols based on single serum progesterone or repeated serum hCG levels

Rationalizing the management of pregnancies of unknown location: temporal and external validation of a risk prediction model on 1962 pregnancies

(2013) B. Van Calster et al.   HUMAN REPRODUCTION

Efficacy and safety of a clinical protocol for expectant management of selected women diagnosed with a tubal ectopic pregnancy

(2013) D. Mavrelos et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

Diagnostic value of serum hCG on the outcome of pregnancy of unknown location: a systematic review and meta-analysis

(2012) N.M. van Mello et al.   HUMAN REPRODUCTION UPDATE

Accuracy of single progesterone test to predict early pregnancy outcome in women with pain or bleeding: meta-analysis of cohort studies

(2012) J. Verhaegen et al.   BMJ-British Medical Journal

Introduction of a single visit protocol in the management of selected patients with pregnancy of unknown location: a prospective study

(2011) M Cordina et al.   BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY

Pregnancy of unknown location: a consensus statement of nomenclature, definitions, and outcome

(2010) Kurt Barnhart et al.   FERTILITY AND STERILITY

Multiple imputation using chained equations: Issues and guidance for practice

(2010) Ian R. White et al.   STATISTICS IN MEDICINE

Pregnancies of unknown location

(2009) Emma Kirk et al.   BEST PRACTICE & RESEARCH CLINICAL OBSTETRICS & GYNAECOLOGY

The optimal timing of an ultrasound scan to assess the location and viability of an early pregnancy

(2009) C. Bottomley et al.   HUMAN REPRODUCTION

Use of serum progesterone measurements to reduce need for follow-up in women with pregnancies of unknown location

(2009) A. Day et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

Why are some ectopic pregnancies characterized as pregnancies of unknown location at the initial transvaginal ultrasound examination?

(2008) Emma Kirk et al.   ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA