Diagnosis and Management of Ectopic Pregnancy
JOSHUA H. BARASH, MD; EDWARD M. BUCHANAN, MD; and CHRISTINA HILLSON, MD, Thomas Jefferson University, Philadelphia, Pennsylvania
http://www.aafp.org/afp/2014/0701/p34.html
Am Fam Physician. 2014 Jul 1;90(1):34-40.

Clinician’s Corner
Does This Woman Have an Ectopic Pregnancy?
The Rational Clinical Examination Systematic Review
John R. Crochet, MD; Lori A. Bastian, MD, MPH; Monique V. Chireau, MD, MPH
http://jama.jamanetwork.com/article.aspx?articleid=1681418
JAMA. 2013;309(16):1722-1729. doi:10.1001/jama.2013.3914.