PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10584542-5 1999 The risk may be avoided by giving vitamin B12 to patients with confirmed or suspected cobalamin deficiency in good time before surgery involving nitrous oxide anaesthesia. Nitrous Oxide 145-158 NADH:ubiquinone oxidoreductase subunit B3 Homo sapiens 42-45