A novel predictive marker for the recurrence of nasal polyposis following endoscopic sinus surgery. - Boztepe OF; Gün T; Demir M; Gür ÖE; Ozel D; Doğru H (European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 2016)