4Manizheh P, Leila P. Perceived environmental stressors and pain perception during labor among primiparous and multiparous women [J]. J Reprod Infertil, 2009, 10 (3): 217 - 223.
5Borjesson K, Ruppert S, Wager J, et al. Personality disorder, psychiatric symptoms and experience of childbirth among childbearing women in Sweden [J]. Midwifery, 2007, 23 (3): 260 - 268.
6Lugina H, Mlay R, Smith H. Mobility and maternal position during childbirth in Tanzania: an exploratory study at four government hospitals [J]. BMC Pregnancy Childbirth, 2004, 4 (I): 3 .
7Hodnett ED. Pain and women's satisfaction with the experience of childbirth: a systematic review [J]. Am J Obstet Gynecol, 2002, 186 (5): 160-172.
8Odent M. New reasons and new ways to study birth physiology [J]. Int J Gynaecol Obstet, 2001, 75 (Suppl I): S39 - 45.
9Lothian JA. Do not disturb: the importance of privacy in labor [J]. J Perinat Educ, 2004, 13 ( 3 ): 4 - 6.
10Mabaraj D. Eating and drinking in labor: should it be allowed? [J]. Eur J Obstet Gynecol Reprod Bioi, 2009, 146 (1): 3 - 7.