<https://pubs.asahq.org/anesthesiology>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Periodical>
<https://pubs.asahq.org/anesthesiology/article/67/3/A543/45446/SUBANESTHETIC-CONCENTRATIONS-OF-HALOTHANE-AND>