1. Organisation for Economic Co-operation and Development. Fertility rates (indicator) [Internet]. Paris: Organisation for Economic Co-operation and Development;2019. cited 2019 Nov 10. Available from:
https://data.oecd.org/pop/fertility-rates.htm.
2. Nam EY, Yoo SJ, Kim HJ. A study assessing support project of Korean medical treatment in infertility in Jecheon. J Orient Obstet Gynecol. 2015; 28:120–132.
3. Association of Busan Korean Medicine. Reporting of oriental infertility treatmnet supporting program, 2014. Busan: Association of Busan Korean Medicine;2014.
4. Association of Busan Korean Medicine. Reporting of oriental infertility treatmnet supporting program, 2015. Busan: Association of Busan Korean Medicine;2015.
5. Association of Busan Korean Medicine. Reporting of oriental infertility treatmnet supporting program, 2016. Busan: Association of Busan Korean Medicine;2016.
6. Cho SH. Case reports of 20 female infertility. J Orient Obstet Gynecol. 2015; 28:109–119.
8. Kim CB, Kim DI, Park MB, Jang BH, Jeong HS, Cho JY. The survey on infertile couples participating oriental infertility treatment programs supported by local governments. Sejong: Ministry of Health and Welfare, Division of Traditional Korean Medicine Policy;2018.
9. Moher D, Liberati A, Tetzlaff J, Altman DG. PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. Ann Intern Med. 2009; 151:264–269.
10. Harbour R, Miller J. A new system for grading recommendations in evidence based guidelines. BMJ. 2001; 323:334–336.
11. Kim SY, Park JE, Seo HJ, Seo HS, Son HJ, Shin CM, Lee YJ, Jang BH. National Evidence-based Healthcare Collaborating Agency (NECA). Division of New Health Technology Assessment. NECA's guidance for undertaking systematic reviews and meta-analyses for intervention. Seoul: NECA;2011.
12. Wu XK, Stener-Victorin E, Kuang HY, Ma HL, Gao JS, Xie LZ, Hou LH, Hu ZX, Shao XG, Ge J, Zhang JF, Xue HY, Xu XF, Liang RN, Ma HX, Yang HW, Li WL, Huang DM, Sun Y, Hao CF, Du SM, Yang ZW, Wang X, Yan Y, Chen XH, Fu P, Ding CF, Gao YQ, Zhou ZM, Wang CC, Wu TX, Liu JP, Ng EHY, Legro RS, Zhang H. PCOSAct Study Group. Effect of acupuncture and clomiphene in Chinese women with polycystic ovary syndrome: a randomized clinical trial. JAMA. 2017; 317:2502.
13. Dieterle S, Ying G, Hatzmann W, Neuer A. Effect of acupuncture on the outcome of in vitro fertilization and intracytoplasmic sperm injection: a randomized, prospective, controlled clinical study. Fertil Steril. 2006; 85:1347–1351.
14. Rashidi BH, Tehrani ES, Hamedani NA, Pirzadeh L. Effects of acupuncture on the outcome of in vitro fertilisation and intracytoplasmic sperm injection in women with polycystic ovarian syndrome. Acupunct Med. 2013; 31:151–156.
15. Shokeir T, Ebrahim M, El-Mogy H. Hysteroscopic-guided local endometrial injury does not improve natural cycle pregnancy rate in women with unexplained infertility: Randomized controlled trial. J Obstet Gynaecol Res. 2016; 42:1553–1557.
16. Aboulghar MA, Mansour RT, Serour GI, Rizk P, Riad R. Improvement of spontaneous pregnancy rate after stopping gonadotropin therapy for anovulatory infertility. Fertil Steril. 1991; 55:722–725.
17. Steures P, van der Steeg JW, Hompes PG, Habbema JD, Eijkemans MJ, Broekmans FJ, Verhoeve HR, Bossuyt PM, van der Veen F, Mol BW. Collaborative Effort on the Clinical Evaluation in Reproductive Medicine. Intrauterine insemination with controlled ovarian hyperstimulation versus expectant management for couples with unexplained subfertility and an intermediate prognosis: a randomised clinical trial. Lancet. 2006; 368:216–221.
18. Frank-Herrmann P, Jacobs C, Jenetzky E, Gnoth C, Pyper C, Baur S, Freundl G, Goeckenjan M, Strowitzki T. Natural conception rates in subfertile couples following fertility awareness training. Arch Gynecol Obstet. 2017; 295:1015–1024.
19. van Eekelen R, Scholten I, Tjon-Kon-Fat RI, van der Steeg JW, Steures P, Hompes P, van Wely M, van der Veen F, Mol BW, Eijkemans MJ, Te Velde ER, van Geloven N. Natural conception: repeated predictions over time. Hum Reprod. 2017; 32:346–353.
20. Bensdorp AJ, van der Steeg JW, Steures P, Habbema JDF, Hompes PGA, Bossuyt PMM, van der Veen F, Mol BWJ, Eijkemans MJC. CECERM study group. A revised prediction model for natural conception. Reprod Biomed Online. 2017; 34:619–626.
21. Lee HJ, Lee JE, Ku SY, Kim SH, Kim JG, Moon SY, Choi YM. Natural conception rate following laparoscopic surgery in infertile women with endometriosis. Clin Exp Reprod Med. 2013; 40:29–32.
22. Snick HK, Snick TS, Evers JL, Collins JA. The spontaneous pregnancy prognosis in untreated subfertile couples: the Walcheren primary care study. Hum Reprod. 1997; 12:1582–1588.
23. Akande VA, Hunt LP, Cahill DJ, Jenkins JM. Differences in time to natural conception between women with unexplained infertility and infertile women with minor endometriosis. Hum Reprod. 2004; 19:96–103.
24. Osmanagaoglu K, Collins J, Kolibianakis E, Tournaye H, Camus M, Van Steirteghem A, Devroey P. Spontaneous pregnancies in couples who discontinued intracytoplasmic sperm injection treatment: a 5-year follow-up study. Fertil Steril. 2002; 78:550–556.
25. Donckers J, Evers JL, Land JA. The long-term outcome of 946 consecutive couples visiting a fertility clinic in 2001-2003. Fertil Steril. 2011; 96:160–164.
26. Troude P, Bailly E, Guibert J, Bouyer J, de la Rochebrochard E. DAIFI Group. Spontaneous pregnancies among couples previously treated by in vitro fertilization. Fertil Steril. 2012; 98:63–68.