2Vargens OM, Silva AC, Progianti JM. Non-invasive nursing technologies for pain relief during childbirth- the Brazilian nurse midwives view. Midwifery, 2013, 29(11) : e99-e106.
3李仲廉,安健雄,倪加骧,等.临床痛疼治疗学.天津:天津科学技术出版社,2003:378.
4Gau ML, Chang CY, Tian SH, et al. Effects of birth ball exercise on pain and self--efficacy during child- birth: a randomised controlled trial in Taiwan. Mid- wifery, 2011, 27(6): e293-e300.
5Taavoni S, Abdolahian S, Haghani H, et al. Effect of birth ball usage on pain the active phase of labor., a randomized controlled trial. J Midwifery Womens Health, 2011, 56(2) :137-140.