Zhang Lei, Chief Physician, Director of the International Medical Services (Special Needs) Department. Expertise in the treatment and management of common pediatric chronic respiratory diseases (e.g., chronic cough, asthma), standardized treatment of common pediatric respiratory infectious diseases (e.g., pneumonia, bronchitis), and diagnosis and management of complex and critical pediatric respiratory diseases. Specializes in pediatric respiratory endoscopic diagnosis and interventional therapy, focusing on the diagnosis and treatment of congenital/acquired laryngeal and tracheobronchial stenosis in children of all ages. Utilizes a combination of imaging and bronchoscopy for comprehensive diagnosis and assessment of pediatric airway stenosis, and is proficient in interventional minimally invasive treatments such as bronchoscopic cryotherapy and laser therapy, providing comprehensive medical treatment and management for various types of pediatric airway stenosis. Additionally, skilled in using bronchoscopy to provide precise pathogen and pathological diagnosis for children with complex infections or interstitial lung diseases. Currently serves as Deputy Head of the Difficult Disease Collaboration Group, Pediatric Respiratory Branch, Chinese Medical Association; Member of the Pulmonary Vascular Disease Collaboration Group, Pediatric Respiratory Branch, Chinese Medical Association; Standing Committee Member of the Pediatric Respiratory Endoscopy Branch, Chinese Medical Doctor Association; Deputy Head of the Youth Academic Group, Chinese Pediatric Respiratory Endoscopy Committee; Youth Committee Member of the Infection Specialty, Pediatric Physicians Branch, Chinese Medical Doctor Association; Secretary of the Pediatric Respiratory Academic Group, Shanghai Medical Association; Youth Committee Member of the Infection and Chemotherapy Branch, Shanghai Medical Association; Member of the Rational Drug Use Committee, Shanghai Medical Association; Secretary of the Pediatric Specialty Committee, Pudong New Area, Shanghai. Overseas training experience: Completed advanced training in pediatric respiratory diseases and respiratory intervention at the Respiratory Medicine Department of Cincinnati Children's Hospital Medical Center (USA), the Pediatric Intensive Care Unit of Taipei Veterans General Hospital, and the Minimally Invasive Tumor Center of the Emergency General Hospital. Main research directions: Pediatric respiratory endoscopic diagnosis and interventional therapy, diagnosis and treatment of various congenital respiratory malformations in children, treatment and management of common pediatric chronic respiratory diseases (e.g., chronic cough, asthma), and diagnosis and treatment of various pediatric respiratory infectious diseases.