RT Journal Article SR Electronic T1 CSF gusher complicating cochlear implant surgery JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e245766 DO 10.1136/bcr-2021-245766 VO 14 IS 11 A1 Soorya Pradeep A1 Arun Alexander YR 2021 UL http://casereports.bmj.com/content/14/11/e245766.abstract