Dr. Thanos Xristos is a Pediatrician, specialized in Germany in Infectious Diseases and in Pediatric and Adolescent Medicine. Since October 2022, he has maintained his private practice in Kalamaria and, since December 2022, he serves as a Pediatrician at the "Agios Loukas" Clinic in Thessaloniki. Until May 31, 2023, he practiced for four years as a private specialist physician in pediatric and adolescent medicine at a family/pediatric practice in Berlin. Dr. Xristos is a graduate of the Democritus University of Thrace. As part of his postgraduate training, he obtained a Certificate in Clinical Nutrition in Pediatrics after successful examinations (DGKJ) and recognition by the Ärztekammer Westfalen Lippe. He is an Authorized collaborator of the A' Test (school readiness screening) and has attended IBCLC Lactation Consultant Seminars. During his specialization and further training, he worked in Germany at academic hospitals of the University of Münster, gaining two years of work experience in the Neonatal Intensive Care Unit (Level 1) and the Pediatric Intensive Care Unit. As a trainee physician, he also worked in the private pediatric and adolescent practice of Prof. Dr. Stefan Eber in Munich. He collaborated with Assistant Professor E. Paraskakis at the pediatric pulmonology clinic of the pediatric department of DUTH (performing spirometry, skin tests, and participating in scientific research). Finally, he provided voluntary pediatric services at refugee centers in the city of Dortmund. In his private practice, he manages a wide range of cases covering the entire spectrum of pediatric and adolescent medicine, utilizing his scientific excellence and extensive experience.