Researchers, including one from the Jet Propulsion Laboratory at CalTech, a chemist from the University of Copenhagen and an anesthesiologist from the University of Michigan Medical School, studied three anesthetic gases:  isoflurane,  desflurane and sevoflurane.

加州理工学院气体喷进实验室的一位研究人员，哥本哈根大学的一位药剂师和密歇根大学医学院的一个麻醉师研究了三种麻醉气体：异氟烷、地氟烷和七氟烷。