Kritakarn Telapol และ Sommart Bumrungphuet; Nathpong Israngura Na Ayudhya. (2018) Effect of Ethyl Chloride Spray for Pain Reduction during Amniocentesis: A non blinded randomized controlled trialin Emergency Cesarean Parturient Mothers. <i>Thai Journal of Obstetrics and Gynaecology</i>, <i>26</i>(2), 75-82.Kritakarn Telapol และ Sommart Bumrungphuet; Nathpong Israngura Na Ayudhya. "Effect of Ethyl Chloride Spray for Pain Reduction during Amniocentesis: A non blinded randomized controlled trialin Emergency Cesarean Parturient Mothers". Thai Journal of Obstetrics and Gynaecology 26 (2018):75-82.Kritakarn Telapol และ Sommart Bumrungphuet; Nathpong Israngura Na Ayudhya. Effect of Ethyl Chloride Spray for Pain Reduction during Amniocentesis: A non blinded randomized controlled trialin Emergency Cesarean Parturient Mothers. PIMDEE Co. Ltd.:ม.ป.ท. 2018.