著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) PICKETT JA,History of obstetric analgesia and anaesthesia,Textbook of Obstetric Anaesthesia,,Greenwich Medical Media,2002,,,,https://cir.nii.ac.jp/crid/1572824500413736064,