EREN GÜZELOĞLU received his MD in Faculty of Medicine from the Adnan Menderes University in 2010, and is had pursued MD(Pediatrics) in Dokuz Eylul University. He worked as Specialist Dr Sancaktepe Prof. Dr. İlhan Varank Training and Education Hospital (2018–2023). In 2024, he moved to Prof. Dr. Cemil Taşcıoğlu City Hospital. His research topics mainly include: Child Health, Vaccine, Antibiotic Adverse Effects, Vitamin B12 Deficiency, Anemia