Barnhart K, Hansen K, Stephenson M, Usadi R, Steiner A, Cedars M, Jungheim E, Hoeger K, Krawetz S, Mills B, Alston M, Coutifaris C, Senapati S, Sonalkar S, Diamond M, Wild R, Rosen M, Sammel M, Santoro N, Eisenberg E, Huang H, Zhang H. Effect of an Active vs Expectant Management Strategy on Successful Resolution of Pregnancy Among Patients With a Persisting Pregnancy of Unknown Location: The ACT or NOT Randomized Clinical Trial. Obstetrical & Gynecological Survey 2022, 77: 24-26. DOI: 10.1097/01.ogx.0000805156.32421.70.Peer-Reviewed Original Research