1. Grimes HG, Nosal RA, Gallagher JC. Ovarian pregnancy: a series of 24 cases. Obstet Gynecol. 1983. 61:174–180.
2. Spiegelberg O. Casuistry in ovarian pregnancy. Arch Gynaekol. 1878. 13:73–79.
3. Raziel A, Golan A, Pansky M, Ron-El R, Bukovsky I, Caspi E. Ovarian pregnancy: a report of twenty cases in one institution. Am J Obstet Gynecol. 1990. 163:1182–1185.
4. al-Meshari AA, Chowdhury N, Adelusi B. Ovarian pregnancy. Int J Gynaecol Obstet. 1993. 41:269–272.
5. Tinelli A, Hudelist G, Malvasi A, Tinelli R. Laparoscopic management of ovarian pregnancy. JSLS. 2008. 12:169–172.
6. Chen JS, Ke TY, Hsieh PC. Heterotopic ovarian pregnancy. Taiwan J Obstet Gynecol. 2009. 48:193–195.
7. Pisarska MD, Carson SA, Buster JE. Ectopic pregnancy. Lancet. 1998. 351:1115–1120.
8. Lipscomb GH, McCord ML, Stovall TG, Huff G, Portera SG, Ling FW. Predictors of success of methotrexate treatment in women with tubal ectopic pregnancies. N Engl J Med. 1999. 341:1974–1978.
9. Potter MB, Lepine LA, Jamieson DJ. Predictors of success with methotrexate treatment of tubal ectopic pregnancy at Grady Memorial Hospital. Am J Obstet Gynecol. 2003. 188:1192–1194.
10. Takacs P, Rodriguez L. High folic acid levels and failure of single-dose methotrexate treatment in ectopic pregnancy. Int J Gynaecol Obstet. 2005. 89:301–302.
11. Barnhart KT, Gosman G, Ashby R, Sammel M. The medical management of ectopic pregnancy: a meta-analysis comparing "single dose" and "multidose" regimens. Obstet Gynecol. 2003. 101:778–784.
12. Takacs P, Chakhtoura N, De Santis T, Verma U. Evaluation of the relationship between endometrial thickness and failure of single-dose methotrexate in ectopic pregnancy. Arch Gynecol Obstet. 2005. 272:269–272.