Sharing Experience in the Application ofDistributed Map of Intractable Epistaxis in Concealed SitesHuiyi. Deng1, #, Huijun. Qiu1, #, Weihao Wang1, Qintai. Yang1,2, *1 Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China2 Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China# The authors contributed equally to this work.* Corresponding authorQintai Yang, MD, PhDDepartment of Otolaryngology-Head and Neck SurgeryDepartment of AllergyThe Third Affiliated Hospital, Sun Yat-sen UniversityNo. 600 Tianhe Road, Guangzhou 510630, ChinaPhone: 020-85252239E-mail: yang.qt@163.com