2Gupta JK, Nikodem C. Maternal posture in labour. Eur J Obstet Gynecol Reprod Biol, 2000,92(2) :273-277.
3Carbonne B, Benachi A, L6vbque M, et al. Matemal position during labor:effects on fetal oxygen saturation measured by pulse oximetry. Obstet Gynecol, 1996,88 (4) : 797-800.
4Bodner-Adler B. Women' s position during labour: influence on maternal and neonatal outcome. Wien Klin Wochenschr, 2003, 115(19-20) : 720-723.
5Allahbadia GN, Vaidya PR. Squatting position for delivery. J Indian Med Assoc, 1993,91( 1 ) :13-16.
6Allahbadia GN, Vaidya PR. Why deliver in the supine position?Aust N Z J Obstet Gynaecol, 1992,32(2) : 104-106.
7Lupe PJ ,Gross TL. Maternal upright posture and mobility in labor- a review. Obstet Gynecol, 1986,67(5) :727-734.
8Salvesen KA, Morkved S. Randomised controlled trial of pelvic floor muscle training during pregnancy. BMJ,2004,14 : 378-380.
9De Jonge A, Teunissen TA, Lagro-Jans,sen AL. Supine position compared to other positions during the second stage of labor: a meta- analytic review. J Psychosom Obstet Gynaecol, 2004,25 ( 1 ) :35-45.