References
- Cagnacci A, Landi S, Volpe A. Rhythmic variation in the rate of ectopic pregnancy throughout the year. Am J Obstet Gynecol 1999;180:1067–71
- Huppertz B. The feto-maternal interface: setting the stage for potential immune interactions. Semin Immunopathol 2007;29:83–94
- Oktay K, Brzyski RG, Miller EB, Krugman D. Association of serum beta-hCG levels with myosalpingeal invasion and viable trophoblast mass in tubal pregnancy. Obstet Gynecol 1994;84:803–6
- Natale A, Candiani M, Merlo D, et al. Human chorionic gonadotropin level as a predictor of trophoblastic infiltration into the tubal wall in ectopic pregnancy: a blinded study. Fertil Steril 2003;79:981–6
- Cabar F, Pereira P, Schultz R, Zugaib M. Predictive factor of trophoblastic invasion on the ampullary region of the tubal wall in ectopic pregnancy. Hum Reprod 2006;21:2426–31
- Elito Junior J, Camano L. Unruptured tubal pregnancy: different treatments for early and late diagnosis. Sao Paulo Med J 2006;124:321–4
- Rabischong B, Larraín D, Pouly JL, et al. Predicting success of laparoscopic salpingostomy for ectopic pregnancy. Obstet Gynecol 2010;116:701–7
- Menon S, Colins J, Barnhart KT. Establishing a human chorionic gonadotropin cutoff to guide methotrexate treatment of ectopic pregnancy: a systematic review. Fertil Steril 2007;87:481–4
- Elito Jr J, Han KK, Camano L. Values of beta-human chorionic gonadotropin as a risk factor for tubal obstruction after tubal pregnancy. Acta Obstet Gynecol Scand 2005;84:864–7