Response: Re: Outcomes From Treatment of Infertility With Natural Procreative Technology in an Irish General Practice

References

1. ↵
   Stanford JB, White GL, Hatasaka H. Timing intercourse to achieve pregnancy: current evidence. Obstet Gynecol 2002; 100: 1333–41.

   OpenUrlCrossRefPubMedWeb of Science
2. ↵
   Gnoth C, Godehardt D, Godehardt E, Frank-Herrmann P, Freundl G. Time to pregnancy: results of the German prospective study and impact on the management of infertility. Human Reprod (Oxford, England) 2003; 18: 1959–66.

   OpenUrl
3. ↵
   Wright VC, Chang J, Jeng G, Chen M, Macaluso M. Assisted reproductive technology surveillance - United States, 2004. MMWR Surveill Summ 2007; 56: 1–22.

   OpenUrlPubMed
4. ↵
   Copperman KB, Schertz JC, Witkin G, Sandler B, Brodman M, Copperman AB. Patients’ return to referring physicians and its relation to their infertility duration. J Womens Health 2007; 16: 1012–6.

   OpenUrl
5. ↵
   Olivius C, Friden B, Borg G, Bergh C. Why do couples discontinue in vitro fertilization treatment? A cohort study. Fertil Steril 2004; 81: 258–61.

   OpenUrlCrossRefPubMedWeb of Science
6. ↵
   Johnson NP, Proctor M, Farquhar CM. Gaps in the evidence for fertility treatment-an analysis of the Cochrane Menstrual Disorders and Subfertility Group database. Human Reprod (Oxford, England) 2003; 18: 947–54.

   OpenUrl
7. ↵
   Pandian Z, Bhattacharya S, Vale L, Templeton A. In vitro fertilisation for unexplained subfertility. Cochrane Database Syst Rev 2005; CD003357.