1. Why not painless childbirth? The politics of childbirth anesthesia in postwar Japan;Onishi;Jpn J Sci Tech Soc,2012
2. Sankamasui no Rekishi wo Furikaeru. [Deepen knowledge in history of obstetric anesthesia];Amano;Perinat Med,2015
3. Nakai A. Shusanki-iryo no Genjo to Hataraki-kata Kaikaku. [Current situation in perinatal medicine and work style reform] Available at: http://www.jaog.or.jp/wp/wp-content/uploads/2017/11/114_20171108.pdf Accessed June 11, 2020.
4. Steger I. A string of tragedies is giving epidurals an even worse rep than before in Japan. Available at: https://qz.com/1062161/a-string-of-tragedies-is-giving-painless-childbirth-via-epidurals-an-even-worse-rep-than-before-in-japan/ Accessed June 11, 2020.
5. Safe epidural anesthesia performed during labor by an obstetrician;Lurie;Int J Gynecol Obstet,1991