Kenneth J. ChangBooksLumbar Intervertebral Disc Degeneration, an Issue of Orthopedic ClinicsEndoscopic Oncologist, an Issue of Gastrointestinal Endoscopy ClinicsManagement of GERD, an Issue of Gastrointestinal Endoscopy ClinicsInterventional Endoscopic Ultrasound, an Issue of Gastrointestinal Endoscopy ClinicsAuthor data: Open Library