1. Allahbadia GN, Vaidya PR. Squatting position for delivery. J Indian Med Assoc. 1993. 91:13–16.
2. Altman D, Ragnar I, Ekström A, Tydén T, Olsson SE. Anal sphincter lacerations and upright delivery postures- a risk analysis from a randomized controlled trial. Int Urogynecol J Pelvic Floor Dysfunct. 2007. 18:141–146.
http://dx.doi.org/10.1007/s00192-006-0123-9.
3. Baek MH, Chun SH, Lee SJ, Kim YJ, Choi JH, Park MI, et al. Computerized analysis of fetal heart rate in normal term pregnant women categorized by birth weight and fetal sex. Korean J Perinatol. 2008. 19:142–149.
4. Bidwell S, Jensen MF. Using a search protocol to identify sources of information: The COSI model. 2004. Bethesda, MD: National Information Center on Health Services Research and Health Care Technology, US National Library of Medicine.
6. Cho WB. An experimental study on the effects of nursing care according to change of position during labor. J Nurs Acad Soc. 1978. 8:139–151.
Article
7. de Jong PR, Johanson RB, Baxen P, Adrians VD, van der Westhuisen S, Jones PW. Randomised trial comparing the upright and supine positions for the second stage of labour. Br J Obstet Gynaecol. 1997. 104:567–571.
http://dx.doi.org/10.1111/j.1471-0528.1997.tb11534.x.
9. Downe S, Gerrett D, Renfrew MJ. A prospective randomised trial on the effect of position in the passive second stage of labour on birth outcome in nulliparous women using epidural analgesia. Midwifery. 2004. 20:157–168.
http://dx.doi.org/10.1016/S0266-6138(03)00052-4.
Article
11. Gupta JK, Hofmeyr GJ, Smyth R. Position in the second stage of labour for women without epidural anaesthesia. Cochrane Database Syst Rev. 2012. 05. 16. 5:CD002006.
Article
12. Higgins J, Green S, editors. The Cochrane Collaboration. Cochrane handbook for systematic reviews of interventions version 5.1.0. 2011. Retrieved March 30, 2011. from
http://www.cochrane-handbook.org.
13. Hur MH, Han SH. Clinical trial of aromatherapy on postpartum mother's perineal healing. J Korean Acad Nurs. 2004. 34:53–62.
Article
14. Kim GJ, Kim SY, Yun SJ, Lee SP, Choe YD, Lee UD. Aortic compression to control massive postpartum hemorrhage. Korean J Obstet Gynecol. 2003. 46:1577–1584.
15. Kim HS. The comparison of perception of birth experience to women who had a traditional delivery and those who selected their type of delivery. 2003. Seoul: Ewha Womans University;Unpublished doctoral dissertation.
16. Kim SK, Kim YK, Cho AJ, Kim HR, Lim SE. The 2009 National Survey on Fertility, Family Health and Welfare in Korea. 2009. Seoul: Korea Institute for Health and Social Affairs.
17. Lawrence A, Lewis L, Hofmeyr GJ, Dowswell T, Styles C. Maternal positions and mobility during first stage labour. Cochrane Database Syst Rev. 2009. 15(2):CD003934.
Article
18. MacLennan AH, Crowther C, Derham R. Does the option to ambulate during spontaneous labour confer any advantage or disadvantage? J Matern Fetal Med. 1994. 3:43–48.
Article
20. Nam JH, Sung KW, Jeong WY, Lee KY, Kang SW. Comparison for second stage of labor and perinatal outcomes between birth chair and recumbent position. Paper presented at fall conference of Korean Society of Obstetrics & Gynecology. 1990. 132.
21. Park MI, Lee WJ, Lee CH, Kim KD, Yun MK, Park YS, et al. Multivariate analysis of variables affecting on fetal heart rate. Korean J Obstet Gynecol. 1999. 42:1769–1776.
25. Thies-Lagergren L, Kvist LJ, Christensson K, Hildingsson I. No reduction in instrumental vaginal births and no increased risk for adverse perineal outcome in nulliparous women giving birth on a birth seat: Results of a Swedish randomized controlled trial. BMC Pregnancy Childbirth. 2011. 11:22.
http://dx.doi.org/10.1186/1471-2393-11-22.
Article