Dr. Gontrand Lopez-Nava, MD, PhD, is one of the most experienced specialists in Europe and probably in the world, in endoscopic technologies for obesity. He founded the Endoscopy Department of Madrid San Rafael Hospital and later on the Endoscopy department of Madrid Sanchinarro University Hospital. In 2002 started Bariatric Endoscopy until now, where as Head of the Bariatric Endoscopy Unit at HM Sanchinarro University Hospital in Madrid, Spain.