Professor of Pediatric SurgeryChief of Pediatric Surgery and Coordinator of all Pediatric Surgical Specialties, Hospital General Universitario Gregorio Marañón, Madrid, Spain. President of ESPES, European Society of Pediatric Endoscopic Surgeons. President of SECLA, Spanish Society of Laparoscopic and Robotic Surgery. Past-President of SECP, Spanish Society of Pediatric Surgery. Member of the Executive Board of UEMS, Section of Pediatric Surgery, European Union of Medical Specialist. Member of the Executive Board of EUPSA, European Pediatric Surgical Association. Honorary Member of the Cuban Society of Pediatric Surgery, La Habana, Cuba. Member of the Advisory Board of referral centers, Ministry of Health, Spain.