The document outlines the qualifications and practices of Dr. Selvaraj, a general and pediatric surgeon, focusing on upper GI endoscopy procedures at Apollo Loga Hospital. It details indications, contraindications, and conditions treated by endoscopy, such as reflux esophagitis and esophageal carcinoma. The document emphasizes the need for modern equipment and the importance of recognizing endoscopy as a vital diagnostic and therapeutic tool.