Bharatam, Dr. Kaundinya.
" Hill’s Classification of Gastro-Oesophageal Flap Valve weakness: A valuable Tool for Endoscopic Grading of Gastro-Oesophageal Reflux Disease." <em>Medical Research Archives</em> [Online], 11.5 (2023): n. pag. Web.  4 Dec. 2024