Objective: To compare efficacy between double-dose methotrexate and single-dose methotrexate for treat ment of tubal ectopic pregnancy (EP). Methods: Between March 2008 and February 2011,157 patients who had tubal EP diagnosed by a non-laparoscopic approach and were hemodynamically stable were enrolled in a prospective study in Qassim, Saudi Arabia. The participants were randomized to receive either double m2 /m2 dose ... إقراء المزيد