TY - JOUR T1 - Fourth branchial fistula: a rare cause of persistent neck discharge in an adult JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2018-227980 VL - 11 IS - 1 SP - e227980 AU - Bharat Hosur AU - Vivek Gupta AU - Chirag Kamal Ahuja Y1 - 2018/11/01 UR - http://casereports.bmj.com/content/11/1/e227980.abstract N2 - ER -