Following declining human chorionic gonadotropin values in pregnancies of unknown location: when is it safe to stop?
Cameron KE, Senapati S, Sammel MD, Chung K, Takacs P, Molinaro T, Barnhart KT. Following declining human chorionic gonadotropin values in pregnancies of unknown location: when is it safe to stop? Fertil Steril. 2016 Apr; 105(4):953-7.