Javier Quillo-Olvera, MD, currently works at The Brain and Spine Care, Spine Center in Queretaro City, Mexico, a highly specialized medical group focused on treating the broad spectrum of spinal diseases employing state-of-the-art minimally invasive surgical techniques including all types of spinal endoscopy. He completed his Clinical Fellowship in Minimally Invasive Spine Surgery and Endoscopic Spine Surgery at Seoul St. Mary's Hospital, The Catholic University of Korea, Neurosurgery Department, and The Leon Wiltse Memorial Hospital in Suwon City, South Korea. Dr. Javier Quillo-Olvera is a Mexican pioneer in spinal endoscopy, particularly in unilateral biportal endoscopy or UBE techniques and is involved in many academic and important scientific activities on spinal endoscopy as a professor, trainer, faculty, and invited speaker. He has published several scientific articles and book chapters about spinal endoscopy in the most important journals and influential books abroad.Diego Quillo-Olvera, MD, currently works as an associate spinal surgeon in The Brain and Spine Care Group in Queretaro City, Mexico. He has participated in several national and international meetings about spinal endoscopy and is co-author of several scientific articles about biportal endoscopic surgery. Dr. Diego learned unilateral biportal endoscopic surgery directly from Dr. Sang Kyu Son, the most important surgeon in biportal endoscopic surgery in the world.Javier Quillo-Reséndiz, MD, has been a neurological surgeon pioneer in Queretaro, Mexico. He currently works as a Senior Attending in the Spine Surgery clinic of The Brain and Spine Care group, in the most important Hospitals of Querétaro.Dr. Quillo-Reséndiz is graduated of the Master of Spine Surgery sponsored by the AOSpine, a highly recognized society in spine surgery worldwide; and a graduate of the international fellowship at the Park Won Wook Hospital in South Korea,where he learned advanced techniques of Biportal Endoscopic Surgery of the Spine. He has recently participated with Drs. Quillo-Olvera in developing minimally invasive endoscopic techniques to treat multiple neurological spinal diseases. He is one of the doctors who has introduced biportal endoscopic methods in Mexico, and the first Neurosurgeon in the Institute of Social Security and Services for Workers (ISSSTE) of the state of Queretaro, where he left a legacy of outstanding work and scientific performance. Michael Mayer, MD, PhD is a Board certified German Orthopaedic – as well as Neurosurgeon specialized in Spinal Surgery. He graduated from Medical School at Johannes-Gutenberg- University in Mainz/Germany in 1981. He was fully trained and board certified in Neurosurgery as well as in Orthopaedic Surgery at the Free University in Berlin (1983 – 1992). He started his specialization in Spine Surgery in 1987 and became Deputy Chairman of the Department ofOrthopaedic Surgery of the Free University of Berlin in 1992. He is currently an ad Honorum Professor of Neurosurgery at the Paracelsus Medical School in Salzburg/Austria. He has been President of the European Spine Society as well as of the German Spine Society (2006). He has published more than 150 papers in peer-reviewed scientific journals and has edited / co-edited 7 books. He is member of the editorial/advisory boards of several international scientific journals