URMC / Encyclopedia / Collection Ear Tube Insertion for Children EBV Antibody Echocardiogram Elbow Fracture Open Reduction and Internal Fixation Electrical Cardioversion Electrocardiogram Electroencephalogram (EEG) Electrolytes Electromyography Electronystagmography (ENG) Electrophysiology Studies Endometrial Ablation Endometrial Biopsy Endomysial Antibody Endoscopic Endonasal Surgery Endoscopic Retrograde Cholangiopancreatography (ERCP) Endoscopic Submucosal Dissection (ESD) Endovascular Coiling Endovascular Neurosurgery and Interventional Neuroradiology Endovenous Laser Varicose Vein Surgery Entamoeba Histolytica Antibody Epidural Corticosteroid Injections Episiotomy Erythrocyte Sedimentation Rate Erythropoietin (Blood) Esophageal Stent Procedure Estradiol (Blood) Ethanol (Blood) Event Monitor Exercise Echocardiogram Exercise Electrocardiogram Nasal Endoscopy Sensory Evoked Potentials Studies