Regional variability of hemorrhage following tonsil surgery in 1,520,234 cases - Windfuhr, JP; Alizoti, P; Hendricks, C (Eur Arch oto-rhino-laryngology Off J Eur Fed Oto-Rhino-Laryngological Soc Affil with Ger Soc Oto-Rhino-Laryngology – Head Neck Surg, 2020)