1Kuczkowski KM, Chandra S. Maternal satisfaction with single-dose spinal analgesia for labor pain in Indonesia : a landmark study[J]. J Anesth, 2008,22 (1) :55-58.
3Conell-Price J,Evans JB, Hong D,et al. The development and validation of a dynamic model to account for the progress of labor in the assessment of pain[J]. Anesth Analg, 2008,106 (5) : 1059- 1515.
