6Revill SI, Robinson JO, Rosen M, et al. The reliability of a linear ana- logue for evaluating pain[ J ]. Anaesthesia, 1976,31 ( 9 ) : 1191 - 1198.
7Singh IP, Sidana J, Bansal P, et al. Phloroglucinol compounds of thera- peutic interest:global patent and technology status [ J ]. Expert Opin Ther Pat,2009,19 (6) :847 - 866.
8Lumbiganon P, Laopaiboon M, Glilmezoglu AM, et al. Method ofdelivery and pregnancy outcomes in Asia: the WHO global sur-vey on maternal and perinatal health 2007- 2008 [j].Lancet,2010,375(9):490-499.
9World Health Organization.Appropriate technology for birth [J].Lancet, 1985, 2:436-437.
