John R. Crochet, MD; Lori A. Bastian, MD, MPH; Monique V. Chireau, MD, MPH
Crochet and coauthors performed a systematic review of 14 studies with 12 101 patients to investigate the accuracy and precision of the patient history, clinical examination, readily available laboratory values, and sonography in the diagnosis of ectopic pregnancy in women with abdominal pain or vaginal bleeding during early pregnancy.